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Download the following FREE pdf e-Books ( Chapter wise / Topic wise solutions, Written by Prof. Subhashish Chattopadhyay SKMClasses Bangalore )
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IIT-JEE, NCERT / CBSE, I.Sc., PU, Board exam, EAMCET, BITS Physics Books with lots of Examples ( Free pdf download of Physics Books, Chapter wise / Topic wise Questions and Solutions )
27 ] CBSE & IIT-JEE Physics Survival Guide – Thermal Properties of Solids, or Thermal Properties of Material, Thermal Conductivity etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Thermal Properties of Solids, or Thermal Properties of Material, Thermal Conductivity Various Methods by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Thermal Properties of Solids, or Thermal Properties of Material, Thermal Conductivity Various Methods etc by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Thermal Properties of Solids, or Thermal Properties of Material, Thermal Conductivity Various Methods etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
cbse-iit-jee-physics-survival-guide-thermal-properties-of-solids-by-prof-subhashish-chattopadhyay
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26 ] CBSE & IIT-JEE Physics Survival Guide – Buoyant Force, Buoyancy, Discussions on Layer of Liquid below the Object etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Buoyant Force, Buoyancy, Discussions on Layer of Liquid below the Object Various Methods by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Buoyant Force, Buoyancy, Discussions on Layer of Liquid below the Object Various Methods etc by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Buoyant Force, Buoyancy, Discussions on Layer of Liquid below the Object Various Methods etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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25 ] CBSE & IIT-JEE Physics Survival Guide – Mechanical Properties of Material, Mechanical Properties of Solids, Young ‘s Modulus, Bulk Modulus, Poisson ‘s Ratio, Shear Stress, Strain, Energy Stored in elongated wire etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Mechanical Properties of Material, Mechanical Properties of Solids, Young ‘s Modulus, Bulk Modulus, Poisson ‘s Ratio, Shear Stress, Strain, Energy Stored in elongated wire Various Methods by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Mechanical Properties of Material, Mechanical Properties of Solids, Young ‘s Modulus, Bulk Modulus, Poisson ‘s Ratio, Shear Stress, Strain, Energy Stored in elongated wire Various Methods etc by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Mechanical Properties of Material, Mechanical Properties of Solids, Young ‘s Modulus, Bulk Modulus, Poisson ‘s Ratio, Shear Stress, Strain, Energy Stored in elongated wire Various Methods etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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24 ] CBSE & IIT-JEE Physics Survival Guide – Kinetic Theory of Gases etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Kinetic Theory of Gases Various Methods by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Kinetic Theory of Gases Various Methods etc by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Kinetic Theory of Gases Various Methods etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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23 ] CBSE & IIT-JEE Physics Survival Guide – Vectors & Scalars etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Vectors & Scalars Various Methods by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Vectors & Scalars Various Methods etc by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Vectors & Scalars Various Methods etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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22 ] CBSE & IIT-JEE Physics Survival Guide – Units, Dimensions, Measurements & Errors etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Units, Dimensions, Measurements & Errors Various Methods by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Units, Dimensions, Measurements & Errors Various Methods etc by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Units, Dimensions, Measurements & Errors Various Methods etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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21 ] CBSE & IIT-JEE Physics Survival Guide – Kinematics, Dynamics or Kinetics, Circular Motion & Projectile Motion etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Kinematics, Dynamics or Kinetics, Circular Motion & Projectile Motion Various Methods by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Kinematics, Dynamics or Kinetics, Circular Motion & Projectile Motion Various Methods etc by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Kinematics, Dynamics or Kinetics, Circular Motion & Projectile Motion, Various Methods etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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20 ] CBSE & IIT-JEE Physics Survival Guide – Measuring Speed of Light, Various Methods etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Measuring Speed of Light, Various Methods by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Measuring Speed of Light, Various Methods etc by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Measuring Speed of Light, Various Methods etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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19 ] CBSE & IIT-JEE Physics Survival Guide – Maxwell ‘s Equations, Electromagnetic Waves etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Maxwell ‘s Equations, Electromagnetic Waves by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Maxwell ‘s Equations, Electromagnetic Waves etc by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Maxwell ‘s Equations & Electromagnetic Waves etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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18 ] CBSE & IIT-JEE Physics Survival Guide – Magnetism History etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Magnetism History by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Magnetism History etc by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Magnetism History etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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17 ] CBSE & IIT-JEE Physics Survival Guide – Magnetic Induction, Voltage Produced etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Magnetic Induction, Voltage Produced by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Magnetic Induction, Voltage Produced by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Magnetic Induction, Voltage Produced etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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16 ] CBSE & IIT-JEE Physics Survival Guide – Magnetic Effects of Current etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Magnetic Effects of Current by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Magnetic Effects of Current by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Magnetic Effects of Current, Various Derivations etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
cbse-iit-jee-physics-survival-guide-magnetic-effect-of-current-by-prof-subhashish-chattopadhyay
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15 ] CBSE & IIT-JEE Physics Survival Guide – Capacitance Dielectrics & Circuits etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Capacitance Dielectrics & Circuits by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Capacitance Dielectrics & Circuits by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Capacitance, Trick Circuits, Combinations of Dielectrics, Various Derivations etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
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14 ] CBSE & IIT-JEE Physics Survival Guide – Electrostatics & Gauss Theorem etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Electrostatics & Gauss Theorem by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Electrostatics & Gauss Theorem by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Electrostatics, Gauss Theorem, Various Derivations etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
cbse-iit-jee-physics-survival-guide-electrostatics-gauss-theorem-by-prof-subhashish-chattopadhyay
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13 ] CBSE & IIT-JEE Physics Survival Guide – Center of Mass etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Center of Mass by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Center of Mass by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Center of Mass, Various Derivations etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
cbse-iit-jee-physics-survival-guide-center-of-mass-by-prof-subhashish-chattopadhyay
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12 ] CBSE & IIT-JEE Physics Survival Guide – Work Power Energy Variable Force Leaking Bucket etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Work Power Energy Variable Force Leaking Bucket by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Work Power Energy Variable Force Leaking Bucket by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Work Power Energy Variable Force Leaking Bucket, Various Derivations etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
cbse-iit-jee-physics-survival-guide-work-power-energy-by-prof-subhashish-chattopadhyay
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11 ] CBSE & IIT-JEE Physics Survival Guide – Moment of Inertia, Solid Bodies Angular Momentum etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Moment of Inertia of Solid Bodies by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Moment of Inertia of Solid Bodies by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Moment of Inertia, Solid Bodies Angular Momentum, Rotational Energy, Derivations etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
cbse-iit-jee-physics-survival-guide-moment-of-inertia-by-prof-subhashish-chattopadhyay
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10 ] CBSE & IIT-JEE Physics Survival Guide – Circular Motion, Conical Pendulum etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Circular Motion, Conical Pendulum etc and many complicated Problems by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Circular Motion by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Circular Motion. Conical Pendulum etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
cbse-iit-jee-physics-survival-guide-circular-motion-by-prof-subhashish-chattopadhyay
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9 ] CBSE & IIT-JEE Physics Survival Guide – Solutions to Irodov Problems, by Subhashish Sir, and Other Professors.
cbse-iit-jee-physics-survival-guide-irodov-problems-solutions-by-prof-subhashish-others
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8 ] CBSE & IIT-JEE Physics Survival Guide – Electrical Circuits, Delta to Star Conversion, Current Source, Trick Circuits, Unbalanced Wheatstone Bridge, Steps and Techniques of Solving Electrical Circuits etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Electrical Circuits, Delta to Star Conversion, Current Source, Trick Circuits, Unbalanced Wheatstone Bridge, Steps and Techniques of Solving Electrical Circuits etc and many complicated Problems by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Gravitation by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Electrical Circuits, including Inductance & Capacitance, internal Resistance etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
cbse-iit-jee-physics-survival-guide-electrical-circuits-by-prof-subhashish-chattopadhyay
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7 ] CBSE & IIT-JEE Physics Survival Guide – Gravitation, Contrasting Comparisons of Gravitational Potential and Electrostatic Potential, Contrasting Comparisons of Gravitational Field and Electrostatic Field, Escape Velocity, Height attended by a mass thrown at various speeds etc – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Gravitation, Contrasting Comparisons of Gravitational Potential and Electrostatic Potential, Contrasting Comparisons of Gravitational Field and Electrostatic Field, Escape Velocity, Height attended by a mass thrown at various speeds etc and many complicated Problems by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Gravitation by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Gravitation, Field, Potential, escape velocity etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
cbse-iit-jee-physics-survival-guide-gravitation-by-prof-subhashish-chattopadhyay
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6 ] CBSE & IIT-JEE Physics Survival Guide – SHM Periodic Motion, Harmonic Oscillations with Solid Objects, Approximate Simple Harmonic Motions – by Professor Subhashish Chattopadhyay, Bangalore.
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – SHM ( Simple Harmonic Motion ) and many complicated Problems by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – SHM by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of SHM Approximate Oscillations etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
cbse-iit-jee-physics-survival-guide-shm-harmonic-oscillations-or-periodic-motion-by-prof-subhashish
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5 ] CBSE & IIT-JEE Physics Survival Guide – Sound Waves, Doppler Effect, Standing waves in Open Tube, Closed Tube, Rods or Bars by Professor Subhashish Chattopadhyay, Bangalore
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Sound Waves, Doppler Effect, Standing waves in Open Tube, Closed Tube, Rods or Bars by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Sound Waves, Oscillations in Wires by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Sound Waves, Doppler effect, Standing waves and Propagating Waves, Oscillations in Wires, Bars, Tubes ( both Open Tube and Closed Tube ) etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. Regarding the latest developments I wrote … “ GUT [ General Unified Theory ] is being modified to introduce a 5th fundamental force, because some heavy particles have been observed at CERN and various other experiments and Producing Gravitational waves at will, without mass, Madala Bosons to explain Dark Matter ”
cbse-iit-jee-physics-survival-guide-waves-and-sound-by-prof-subhashish
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4 ] CBSE & IIT-JEE Physics Survival Guide – Radio activity and Modern Physics by Professor Subhashish Chattopadhyay, Bangalore
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Radio activity and Modern Physics by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Radio activity and Modern Physics by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Radioactivity and Modern Physics. LASERS, Dirac Equation, Particle Physics, Diode, Triode, Transistor, Quantum Mechanics etc are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE & IIT-JEE Physics Survival Guide-Radio activity and Modern Physics by Prof. Subhashish
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3 ] CBSE & IIT-JEE Physics Survival Guide – Mirrors Lenses Slabs Prisms Ray Diagram Problems – Optics by Professor Subhashish Chattopadhyay, Bangalore
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Mirrors Lenses Slabs Prisms Ray Diagram Problems Optics by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Mirrors Lenses Slabs Prisms Ray Diagram Problems Optics by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Mirror Slab Prism Lenses Ray Diagram Problems & Solutions Optics. Silvered Slab, Silvered Lenses, Silvered prisms are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
In this eBook I wrote about my Personal Choice of, ” List of Best Experiments ” …
Michelson–Morley experiment proving there was no Aether, Moseley ‘s experiment with X-Rays to discover Protons, Jagadish chandra Bose demonstrating controlled emission / transmission and receiving of Radio waves, Casimir experiments to show Casimir forces of virtual particles, Eddington measuring bending of light, Flying atomic clocks in planes and confirming slowing down of time at high speeds, Victor Hess measured Radiation level variation at ground and high up in the atmosphere, Soviet physicist Sergey Vernov was the first to use radiosondes to perform cosmic ray readings with an instrument carried to high altitude by a balloon at heights up to 13.6 km, The proof of time dilation by Muon decay, Measurement of Space-time curvature near Earth and thereby the stress–energy tensor (which is related to the distribution and the motion of matter in space) in and near Earth , Detecting Gravitational Waves.
CBSE & IIT-JEE Physics Survival Guide-Mirrors Prisms Lens Slabs Optics by Prof. Subhashish
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2 ] CBSE & IIT-JEE Physics Survival Guide – Wave Optics by Professor Subhashish Chattopadhyay, Bangalore
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Wave Optics by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide- Wave Optics by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Wave Optics. Slabs, Silvered Slab, Lenses, Silvered Lenses, Prisms, Silvered prisms are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE & IIT-JEE Physics Survival Guide-Wave Optics by Prof. Subhashish
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1 ] CBSE & IIT-JEE Physics Survival Guide – Ray or Geometrical Optics by Professor Subhashish Chattopadhyay, Bangalore
Description – “ Spoon Feeding CBSE & IIT-JEE Physics Survival Guide – Ray or Geometrical Optics by Professor Subhashish Chattopadhyay ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Physics Survival Guide – CBSE & IIT-JEE Physics Survival Guide – Ray or Geometrical Optics by Professor Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II COMED-K CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Ray or Geometrical Optics. Slabs, Silvered Slab, Lenses, Silvered Lenses, Prisms, Silvered prisms are also covered. There are many kinds of Problems which are NOT covered in Professor H C Verma ‘s books ( Concepts of Physics ) or Irodov, or ” Resnick & Halliday “. Some examples being split Lenses, Fresnel’s Biprism, Polytropic Processes, Silvered lenses, Slab with a lens like hole or filled with liquids, Cylindrical lenses, isodiaphers, Spallation Reaction, Magic Numbers, Doubly Magic Numbers, Metamaterials with Negative Refractive Index etc. All these kinds of Questions which have been asked in various exams are covered in eBooks of Professor Subhashish Chattopadhyay. Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, COMED-K etc with CBSE, CEE, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE & IIT-JEE Physics Survival Guide-Ray or Geometrical Optics by Prof. Subhashish
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Nima Arkani-Hamed has written a beautiful paper on ” The Future of Fundamental Physics “
We are too used to see ‘daily news ‘ which changes everyday. Often many of us start thinking or imagining Progress in Science and / or technology will also happen at that speed. Searching the net for future trends, every hour, actually wastes time, rather than teaching us anything. Slow long term prediction is difficult to do. These predictions does not change much. It needs very deep understanding of the present trends, to write about future.
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IIT-JEE, NCERT / CBSE, I.Sc., PU, Board exam, EAMCET, BITS Chemistry Books with lots of Examples ( Free pdf download of Chemistry Books, Chapter wise / Topic wise Questions and Solutions )
8 ] CBSE 12 & IIT-JEE Chemistry Survival Guide – Stoichiometry Titration by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Stoichiometry Titration ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Chemistry Survival Guide – Stoichiometry Titration by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers several examples of Stoichiometry Titrations, Heating effects in several salts, colours or colors of the precipitates, Empirical formulae calculation, Limiting reagents, Titration examples, Equivalent weight, milli-equivalent weight, What mass or moles is reacting with how much ? How much is oxidised ? How much is Reduced ? Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, etc with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE 12 & IIT-JEE Chem Survival Guide-Stoichiometry Titration by Prof. Subhashish
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7 ] CBSE 12 & IIT-JEE Chemistry Survival Guide – Redox Reactions by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Redox Reactions ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Chemistry Survival Guide – Redox Reactions by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CEE COMED-K IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers more than 60 examples of Redox Reactions, Several Complicated examples and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, etc with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE 12 & IIT-JEE Chem Survival Guide-Redox Reactions by Prof. Subhashish
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6 ] CBSE 12 & IIT-JEE Chemistry Survival Guide – Electrochemistry by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Electrochemistry ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Chemistry Survival Guide – Electrochemistry by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CEE IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers Electrochemistry, Oxidation Potential, Reduction Potential, Electrode Potential, Reactivity Series, Battery, Nernst Equation, Variation of Voltage with concentration, Electrolyte, Electrolysis, Salt Bridge, Daniel Cell, Primary Cell, Secondary Cell, Galvanic Cell, Electrolytic Cell, Conductivity, Kohlrausch ’s Law and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, etc with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE 12 & IIT-JEE Chem Survival Guide-ElectroChemistry by Prof. Subhashish
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5 ] CBSE 12 & IIT-JEE Organic Chemistry Survival Guide – Reduction Methods by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Reduction Methods ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Organic Chemistry Survival Guide – Reduction Methods by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CEE COMED-K IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers Various kinds of Reduction Methods in Organic Chemistry. Covers Gilmann ’s Reagent, Grignard Reagent, Trimethyl Silyl Iodide, Silyl Wittig Reaction, Hydrogen with Ni, Zn, Pd Palladium, Bakers Yeast, Wolf Kishner, Wilkinson ’s Catalyst, Birch Reduction, Lindlar ’s Catalyst, Benkeser Reduction, Reduction with HCO2H, Sodium Boro Hydride NaBH4, Veils Meier Reaction, Luche ’s Reagent, Super Hydride, Sodium Cyno boro hydride, Dibal H, Adams Catalyst, Rosen Mund Reduction, Various Lithium Aluminium Hydrides, NaNH2, and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, etc with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE 12 & IIT-JEE Organic Chem Survival Guide-Reduction methods by Prof. Subhashish
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4 ] CBSE 12 & IIT-JEE Organic Chemistry Survival Guide – Oxidation Methods by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Oxidation Methods ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Organic Chemistry Survival Guide – Oxidation Methods by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CEE COMED-K IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers Various kinds of Oxidation Methods in Organic Chemistry. Covers Sarett ’s Reagent, PCC, Chromium Oxide, Osmium Oxide, Manganese Oxide, Silver oxides, Ruthenium Oxide, Hydrogen Peroxide, Selenium dioxide, KMnO4, Jones, Julia Colonna, DCC, Corey ’s, Moffats, Ley Oxidation, MPV, Fetizon, Fremy ’s Salt, Elbs Persulphate Oxidation, Sodiumperiodate, Palladium Chloride, Copper Chloride, Sharpless epoxidation, and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, etc with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions.Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE 12 & IIT-JEE Organic Chem Survival Guide-Oxidation methods by Prof. Subhashish
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3 ] CBSE 12 & IIT-JEE Chem Survival Guide – Bonds & Structure by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Bonds & Structures ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Chem Survival Guide – Bonds & Structures by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CEE COMED-K IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers Various kinds of Bonds and Structures in Chemistry. Covers Sigma, Pi, Delta, Back Bonding, Coordinate or Dative Bond, Eta Bond, Hydrogen Bond, London forces, and many more, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, etc with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions.Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE 12 & IIT-JEE Chem Survival Guide-Bonds & Structure by Prof. Subhashish
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2 ] CBSE 12 & IIT-JEE Chem Survival Guide – Elements & Properties by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Elements & Properties ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Chem Survival Guide – Elements & Properties by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CEE COMED-K IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers Elements & Their Properties in Chemistry. Covers the discoveries by spectral Analysis, Named after smell, places, people etc. Various compounds, tests, properties, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, etc with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions.Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE 12 & IIT-JEE Chem Survival Guide-Elements & Properties by Prof. Subhashish
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1 ] CBSE 12 & IIT-JEE Chem Survival Guide – Empirical Formulae by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Empirical Formulae ” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Chem Survival Guide – Empirical Formulae by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CEE COMED-K IGCSE IB AP-Chemistry, CET, VIT, Manipal, SRM and other exams.
This e-Book covers various kinds of Empirical Equations in Chemistry. These equations are formed by experiments, and graph plotting. In some rare cases the Theory was developed later. Covers Slater’s rule, Shielding, Finding Electronegativity values by Allred and Rochow ’s empirical formula, Moseley’s Law, Trouton ’s law, Einstein-Debey equation (Dulong & Petit), Reynolds number, Raoult’s law, Variation of viscosity with temperature, Arrhenius model, Williams-Landel-Ferry model, Masuko and Magill model, Walther formula, Wright model, Seeton model, Variation of surface tension with temperature, Eotvos equation, Guggenheim-Katayama equation, Debye-Huckel-Onsager theory of conductivity of ions in dilute solutions, Liquid drop model of Nucleus, Nuclear Shell Model, Ionic character percentage of a diatomic molecule, and various incomplete dictionary kinds of collection for Course of IIT-JEE, CET, etc with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions.Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions.
CBSE 12 & IIT-JEE Chem Survival Guide-Empirical Formulae by Prof. Subhashish
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IIT-JEE, NCERT / CBSE, I.Sc., PU, Board exam, EAMCET, BITS Math Books with lots of Questions and Solutions, Examples ( Free pdf download of Math Books, Chapter wise / Topic wise Solutions )
17 ] CBSE & IIT-JEE Math Survival Guide – Trigonometry by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Trigonometry” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Trigonometry by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Trigonometry with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Trigonometry, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
CBSE & IIT-JEE Math Survival Guide-Trigonometry by Prof. Subhashish
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16 ] CBSE & IIT-JEE Math Survival Guide – 3D Coordinate Geometry by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding 3D Coordinate Geometry” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – 3D Coordinate Geometry by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers 3D Coordinate Geometry with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of 3D Coordinate Geometry, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
CBSE & IIT-JEE Math Survival Guide-3D Geometry by Prof. Subhashish
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15 ] CBSE & IIT-JEE Math Survival Guide – Hyperbola Coordinate Geometry by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Hyperbola Coordinate Geometry” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Hyperbola Coordinate Geometry by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Hyperbola Coordinate Geometry with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Hyperbola Coordinate Geometry, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
CBSE & IIT-JEE Math Survival Guide-Hyperbola by Prof. Subhashish
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14 ] CBSE & IIT-JEE Math Survival Guide – Ellipse Coordinate Geometry by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Ellipse Coordinate Geometry” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Ellipse Coordinate Geometry by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Ellipse Coordinate Geometry with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Ellipse Coordinate Geometry, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
CBSE & IIT-JEE Math Survival Guide-Ellipse by Prof. Subhashish
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13 ] CBSE & IIT-JEE Math Survival Guide – Parabola Coordinate Geometry by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Parabola Coordinate Geometry” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Parabola Coordinate Geometry by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Parabola Coordinate Geometry with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Parabola Coordinate Geometry, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal ’s Solutions.
CBSE & IIT-JEE Math Survival Guide-Parabola by Prof. Subhashish
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12 ] CBSE & IIT-JEE Math Survival Guide – Pair of Straight Lines Coordinate Geometry by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Pair of Straight Lines Coordinate Geometry” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Pair of Straight Lines Coordinate Geometry by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Pair of Straight Lines Coordinate Geometry with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Pair of Straight Lines Coordinate Geometry, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
CBSE & IIT-JEE Math Survival Guide-Pair of Straight Lines by Prof. Subhashish
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11 ] CBSE 11 & IIT-JEE Math Survival Guide – Circles Coordinate Geometry by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Circles Coordinate Geometry” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Circles Coordinate Geometry by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Circles Coordinate Geometry with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Circles Coordinate Geometry, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
CBSE 11 & IIT-JEE Math Survival Guide-Circles by Prof. Subhashish
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10 ] CBSE 11 & IIT-JEE Math Survival Guide – Straight Lines Coordinate Geometry by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Lines Coordinate Geometry” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Lines Coordinate Geometry by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Straight Lines Coordinate Geometry with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Straight Lines Coordinate Geometry, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
CBSE 11 & IIT-JEE Math Survival Guide-Straight Lines by Prof. Subhashish
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9 ] CBSE 11 & IIT-JEE Math Survival Guide – Complex Numbers or Imaginary Numbers by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Complex Numbers or Imaginary Numbers” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Complex Numbers or Imaginary Numbers by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Complex Numbers or Imaginary Numbers with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Complex Numbers or Imaginary Numbers, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal ’s Solutions.
CBSE 11 & IIT-JEE Math Survival Guide-Complex Number by Prof. Subhashish
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8 ] CBSE 12 & IIT-JEE Math Survival Guide – Quadratic Equations by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Quadratic Equations” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Quadratic Equation by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Quadratic Equations with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Quadratic Equations, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
CBSE 11 & IIT-JEE Math Survival Guide-Quadratic Equation by Prof. Subhashish
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7 ] CBSE 12 & IIT-JEE Math Survival Guide – Continuity and Differentiability by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Continuity & Differentiability” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Continuity and Differentiability by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Continuity and Differentiability with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Continuity and Differentiability, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal ’s Solutions.
CBSE 12 & IIT-JEE Math Survival Guide-Continuity & Differentiability by Prof. Subhashish
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6 ] CBSE 12 & IIT-JEE Math Survival Guide – Relations and Functions by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Relations & Functions” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Relations and Functions by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Relations and Functions with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Relations and Functions, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal ’s Solutions.
CBSE 12 & IIT-JEE Math Survival Guide-Relations & Functions by Prof. Subhashish
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5 ] CBSE 12 & IIT-JEE Math Survival Guide – Graphs and Functions by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Graphs & Functions” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Graphs and Functions by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Graphs and Functions with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Graphs and Functions, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
CBSE 12 & IIT-JEE Math Survival Guide-Functions & Graphs by Prof. Subhashish
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4 ] CBSE 12 & IIT-JEE Math Survival Guide – Indefinite Integrals by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Indefinite Integrals & Calculus” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Indefinite Integrals by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CET CEE IGCSE IB AP-Mathematics and other exams.
This e-Book covers Indefinite Integrals with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Indefinite Integrals, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
CBSE 12 & IIT-JEE Math Survival Guide-Indefinite Integrals by Prof. Subhashish
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3 ] CBSE 12 & IIT-JEE Math Survival Guide – Area & Volume by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Area and Volume ” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 and IIT-JEE Math Survival Guide – Area and Volume by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CET CEE IGCSE IB AP-Mathematics and other exams.
This e-Book covers various kinds of graphs, such as graph of Ln x, ( ln x )/x, x Ln x, floor x [ x ] , Shifting of graphs, roots of Quadratic, cubic, and other higher powers of x ( polynomials ), asymptotes, ( How to find Asymptotes ) etc. Volume by revolution and hundreds of Area problems of IIT-JEE, CET, etc with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions.Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal ’s Solutions.
CBSE 12 & IIT-JEE Math Survival Guide-Area & Volume by Prof. Subhashish
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2 ] CBSE 12 & IIT-JEE Math Survival Guide – Definite Integrals by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Definite Integrals ” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide-Definite Integrals by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CET CEE IGCSE IB AP-Mathematics and other exams.
CBSE 12 & IIT-JEE Math Survival Guide-Definite Integrals by Prof. Subhashish
This e-Book covers Definite Integrals with [ x ] greatest integer functions, { x } fraction function, Max and Min functions. Gamma function, Beta function, Integration after converting to Complex number, Leibnitz forms of Differentiating Integrals, L Hospital’s rule applied to limits with Integrals, Inequalities of Integrals, Rules / Tricks / Properties of Definite Integrals, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions.Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal’s Solutions.
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1 ] CBSE 12 Math Survival Guide – Differential Equations by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Differential Equations ” for IIT-JEE, I.Sc. , CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide – Differential Equations by Prof. Subhashish Chattopadhyay SKMClasses Bangalore Useful for I.Sc. PU-II CET CEE IGCSE IB AP-Mathematics and other exams.
CBSE 12 & IIT-JEE Math Survival Guide-Differential Equations by Prof. Subhashish
This e-Book covers all kinds of Differential equations, and methods to solve them. There is a priority checklist for the approach to be taken for solving the problems. Covers ISc, CBSE, COMED-K IIT-JEE problems, Linear, Homogeneous, Variable separable by substitution, Exact, Reducible to exact, Bernoulli, Integrating Factors or Multiplying Factors, even Clairaut’s Differential Equations ( IIT-JEE 1999, Bihar CEE 1999 ). Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal ’s Solutions.
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Various States have different names for the Engineering Entrance Exams.
CET – Common Engineering Entrance Test or Common Entrance Test is for Karnataka, Maharastra, Gujrat, Himachal Pradesh, J&K
GUJCET Exam – Gujarat Entrance Common Entrance Test – Engineering
HPCET – Himachal Pradesh Common Entrance Test
CEE – Commissionerate of Entrance Examinations Kerala. Some people say Common Entrance Exam. The exam in Kerala actually is known as KEAM – Kerala
Engineering Agriculture Medical Degree.
ASSAM CEE – Assam Combined Entrance Exam
EAMCET – Engineering and Medical Common Entrance Test
MP PET – Madhya Pradesh Pre Engineering Test. Randomly I liked lots of Physics Questions of MP-PET, as these were of very high quality / interesting.
RPET or R-PET – Rajasthan Pre Engineering Test
WBJEE or WB-JEE – West Bengal Joint Entrance Exam. The questions of these are very good / high quality.
UPSEE – Utter Pradesh State Entrance Exam
BCECEB – Bihar Combined Entrance Competitive Examination Board. The exam name is BCECE. Some call it as Bihar Combined Engineering Entrance Exam BCEEE or
BCECE (Bihar Combined Entrance Competitive Examination)
OJEE – Orissa Joint Entrance Exam
Tamilnadu does not have any state ( common ) entrance test. The admissions in colleges / universities are through standard 12 marks.
TNEA is a State Engineering Entrance Examination, which is conducted by Anna University. Tamil Nadu Engineering Admission.
COMEDK PGET – Consortium of Medical, Engineering and Dental Colleges of Karnataka for PG Post Graduate
NATA – National Aptitude Test in Architecture. National Institute of Advanced Studies in Architecture (NIASA) conducts this.
ISAT by IISAT – Indian Institute of Space Science and Technology (IISAT) Admission Test (ISAT) is a National Level Entrance Examination.
NAT – National Aptitude Test by Society for Research & Development in Education (SRDE), New Delhi
ENAT – EPSI National Admission Test. by Manipal Institute of Technology. Manipal Online Entrance Test Manipal-OET
VITEEE – VIT Engineering Entrance Exam, Vellore Institute of Technology. Conducted by VIT university
BITSAT – Birla Institute of Technology and Science Admission Test.
Punjab PET – Punjab Engineering Admission, Pre Engineering Test
ASSAM CEE – Assam Combined Entrance Exam
Tripura JEE – Tripura Joint Entrance Exam
NEE – NERIST Entrance Examination. Conducted by the North Eastern Regional Institute of Science & Technology (NERIST), Nirjuli, Itanagar, Arunachal Pradesh
1 ] CET CEE EAMCET JEE Math Survival Guide – Hyperbola Coordinate Geometry by Prof. Subhashish Chattopadhyay
Description – “Spoon Feeding Hyperbola Coordinate Geometry” for IIT-JEE, I.Sc., CBSE, Karnataka PU, State Boards etc. CBSE Standard 12 Math Survival Guide-Hyperbola Coordinate Geometry by Prof. Subhashish Chattopadhyay SKMClasses Bangalore. Useful for I.Sc. PU-II CET CEE COMED-K IGCSE IB AP-Mathematics and other exams.
This e-Book covers Hyperbola Coordinate Geometry with lots of Video explanations. The classroom teaching videos can be seen by clicking on the given links. The videos can be downloaded also. Hundreds of tricky problems solved. Rules / Tricks / Properties of Hyperbola Coordinate Geometry, with CBSE, COMED-K, IIT-JEE ( Main and Advanced ) Problems and Solutions. Includes NCERT / CBSE Text Book Solutions, Chapter wise Solutions, AIEEE ( Now known as IIT-JEE main ) Solutions, Roorkey Entrance Exam Solutions, CET, CEE, PET, EAMCET Solutions. R D Sharma Solutions, R S Aggarwal ’s Solutions.
CET CEE PET EAMCET JEE Math Survival Guide-Hyperbola by Prof. Subhashish
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Some books which are must read. I tell all my friends and students to read these
You should read the books by Daniel Kahneman,
https://vk.com/doc23267904_175119602
The Black Swan – by Nassim Taleb
http://shifter-magazine.com/wp-content/uploads/2015/02/Taleb_The-Black-Swan.pdf
also
see http://stavochka.com/files/Nate_Silver_The_Signal_and_the_Noise.pdf
Nudge by Thaler and Sunstein
https://ethicslab.georgetown.edu/studio/wordpress/wp-content/uploads/2015/02/Richard_H._Thaler_Cass_R._Sunstein_Nudge_Impro_BookFi.org_.pdf
book which explains pricing is ” The undercover Economist “
or
http://ebook.stepor.com/book/the-undercover-economist-76396-pdf.html
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Many more free pdf e-Books are available at ( such as H C Verma Concepts of Physics Solutions, Arihant Books, free download eBooks for IIT JEE guides, AIEEE IIT JEE advanced Chapter wise solutions, preparation materials )
1 ] A Guide Book to Mechanism in Organic Chemistry by Peter Sykes
A_GUIDE_BOOK_TO_MECHANISM_IN_ORGANIC_CHEMISTRY
2 ] Nomenclature of Inorganic Chemistry – IUPAC Recommendations 2005
Nomenclature of Inorganic Chemistry – IUPAC Recommendations 2005
3 ] Linear Algebra For Dummies
4 ] Calculus Workbook For Dummies
5 ] Differential Equations For Dummies
Differential_Equations_For_Dummies
6 ] Linear Algebra by Jim Hefferon
7 ] Mathematics – Puzzles from around the world
Mathematics—Puzzles-from-around-the-world
8 ] Graph Theory by Reinhard Diestel
9 ] Electronics for Dummies
10 ] Electronics Projects for Dummies
Electronics Projects For Dummies
11 ] Physics For Dummies
12 ] Physics Workbook For Dummies
13 ] Inorganic Chemistry James E. House
Inorganic Chemistry James E. House
14 ] Inorganic Chemistry by Cox
15 ] Inorganic Chemistry 5th Edition Miessler
Inorganic Chemistry 5th Edition Miessler
16 ] Fundamentals of Organic Chemistry Solomon
Fundamentals of Organic Chemistry Solomon
17 ] Illustrated Guide to Home Chemistry Experiments
Illustrated Guide to Home Chemistry Experiments
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e-Book-e-Book-e-Book-e-Book-e-Book-e-Book-e-Book-e-Book-e-Book-e-Book–e-Book
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Solutions to Chapter 13 :
Hydrocarbons
Must see https://zookeepersblog.wordpress.com/some-points-which-i-wish-all-my-new-prospective-students-know/
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The previous chapter Solution is at https://zookeepersblog.wordpress.com/ncert-cbse-standard-11-chemistry-chapter-12-organic-chemistry-some-basic–
principles-and-techniques/
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The next chapter Solution is at https://zookeepersblog.wordpress.com/ncert-cbse-standard-11-chemistry-chapter-14-environmental-chemistry/
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The previous chapter Solution is at https://zookeepersblog.wordpress.com/ncert-cbse-standard-11-chemistry-chapter-12-organic-chemistry-some-basic–
principles-and-techniques/
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IUPAC name old and new comparison
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Hydrocarbons are the important sources of energy.
The term ‘hydrocarbon’ is self-explanatory which means compounds of carbon and hydrogen only. Hydrocarbons play a key role in our daily life. You must be familiar with the terms ‘LPG’ and ‘CNG’ used as fuels. LPG is the abbreviated form of liquified petroleum gas whereas CNG stands for compressed natural gas. Another term ‘LNG’ (liquified natural gas) is also in news these days. This is also a fuel and is obtained by liquifaction of natural gas. Petrol, diesel and kerosene oil are obtained by the fractional distillation of petroleum found under the earth’s crust. Coal gas is obtained by the destructive distillation of coal. Natural gas is found in upper strata during drilling of oil wells. The gas after compression is known as compressed natural gas. LPG is used as a domestic fuel with the least pollution. Kerosene oil is also used as a domestic fuel but it causes some pollution. Automobiles need fuels like petrol, diesel and CNG. Petrol and CNG operated automobiles cause less pollution. All these fuels contain mixture of hydrocarbons, which are sources of energy. Hydrocarbons are also used for the manufacture of polymers like polythene, polypropene, polystyrene etc. Higher hydrocarbons are used as solvents for paints. They are also used as the starting materials for manufacture of many dyes and drugs. Thus, you can well understand the importance of hydrocarbons in your daily life. In this unit, you will learn more about hydrocarbons.
13.1 CLASSIFICATION
Hydrocarbons are of different types. Depending upon the types of carbon-carbon bonds present, they can be classified into three main categories – (i) saturated (ii) unsaturated and (iii) aromatic hydrocarbons. Saturated hydrocarbons contain carbon-carbon and carbon-hydrogen single bonds. If different carbon atoms are joined together to form open chain of carbon atoms with single bonds, they are termed as alkanes as you have already studied in Unit 12. On the other hand, if carbon atoms form a closed chain or a ring, they are termed as cycloalkanes. Unsaturated hydrocarbons contain carbon-carbon multiple bonds – double bonds, triple bonds or both. Aromatic hydrocarbons are a special type of cyclic compounds. You can construct a large number of models of such molecules of both types (open chain and close chain) keeping in mind that carbon is etravalent and hydrogen is monovalent. For making models of alkanes, you can use toothpicks for bonds and plasticine balls for atoms. For alkenes, alkynes and aromatic hydrocarbons, spring models can be constructed.
13.2 ALKANES
As already mentioned, alkanes are saturated open chain hydrocarbons containing carbon – carbon single bonds. Methane (CH4) is the first member of this family. Methane is a gas found in coal mines and marshy places. If you replace one hydrogen atom of methane by carbon and join the required number of hydrogens to satisfy the tetravalence of the other carbon atom, what do you get? You get C2H6. This hydrocarbon with molecular formula C2H6 is known as ethane. Thus you can consider C2H6 as derived from CH4 by replacing one hydrogen atom by -CH3 group. Go on constructing alkanes by doing this theoretical exercise i.e., replacing hydrogen atom by -CH3 group. The next molecules will be C3H8, C4H10……
These hydrocarbons are inert under normal conditions as they do not react with acids, bases and other reagents. Hence, they were earlier known as paraffins (latin : parum, little; affinis, affinity). Can you think of the general formula for alkane family or homologous series? The general formula for alkanes is CnH2n+2, where n stands for number of carbon atoms and 2n+2 for number of hydrogen atoms in the molecule. Can you recall the structure of methane? According to VSEPR theory (Unit 4), methane has a tetrahedral structure (Fig. 13.1) which is multiplanar, in which carbon atom lies at the centre and the four hydrogen atoms lie at the four corners of a regular tetrahedron. All H-C-H bond angles are of 109.5°.
In alkanes, tetrahedra are joined together in which C-C and C-H bond lengths are 154 pm and 112 pm respectively (Unit 12). You have already read that C-C and C-H σ bonds are formed by head-on overlapping of sp3 hybrid orbitals of carbon and 1s orbitals of hydrogen atoms.
13.2.1 Nomenclature and Isomerism
You have already read about nomenclature of different classes of organic compounds in Unit 12. Nomenclature and isomerism in
alkanes can further be understood with the help of a few more examples. Common names are given in parenthesis. First three alkanes – methane, ethane and propane have only one structure but higher alkanes can have more than one structure. Let us write structures for C4H10. Four carbon atoms of C4H10 can be joined either in a continuous chain or with a branched chain in the following two ways :
In how many ways, you can join five carbon atoms and twelve hydrogen atoms of C5H12? They can be arranged in three ways as shown in structures III-V
Structures I and II possess same molecular formula but differ in their boiling points and other properties. Similarly structures III, IV and V possess the same molecular formula but have different properties. Structures I and II are isomers of butane, whereas structures III, IV and V are isomers of pentane. Since difference in properties is due to difference in their structures, they are known as structural isomers. It is also clear that structures I and III have continuous chain of carbon atoms but structures II, IV and V have a branched chain. Such structural isomers which differ in chain of carbon atoms are known as chain isomers. Thus, you have seen that C4H10 and C5H12 have two and three chain isomers respectively.
Problem 13.1
Write structures of different chain isomers of alkanes corresponding to the molecular formula C6H14. Also write their IUPAC names.
Based upon the number of carbon atoms attached to a carbon atom, the carbon atom is termed as primary (1°), secondary (2°), tertiary (3°) or quaternary (4°). Carbon atom attached to no other carbon atom as in methane or to only one carbon atom as in ethane is called primary carbon atom. Terminal carbon atoms are always primary. Carbon atom attached to two carbon atoms is known as secondary. Tertiary carbon is attached to three carbon atoms and neo or quaternary carbon is attached to four carbon atoms. Can you identify 1°, 2°, 3° and 4° carbon atoms in structures I to V ? If you go on constructing structures for higher alkanes, you will be getting still larger number of isomers. C6H14 has got five isomers and C7H16 has nine. As many as 75 isomers are possible for C10H22.
In structures II, IV and V, you observed that -CH3 group is attached to carbon atom numbered as 2. You will come across groups like -CH3, -C2H5, -C3H7 etc. attached to carbon atoms in alkanes or other classes of compounds. These groups or substituents are known as alkyl groups as they are derived from alkanes by removal of one hydrogen atom. General formula for alkyl groups is CnH2n+1 (Unit 12).
Let us recall the general rules for nomenclature already discussed in Unit 12. Nomenclature of substituted alkanes can further be understood by considering the following problem:
Problem 13.2
Write structures of different isomeric alkyl groups corresponding to the molecular formula C5H11. Write IUPAC names of alcohols obtained by attachment of -OH groups at different carbons of the chain.
| Structure and IUPAC Name | Remake |
|---|---|
| Lowest sum and alphabetical arrangement | |
| Lowest sum and alphabetical arrangement | |
| sec is not considered while arranging alphabetically; isopropyl is taken as one word | |
| Further numbering to the substituents of the side chain | |
| Alphabetical priority order |
Problem 13.3
Write IUPAC names of the following compounds :
(i) (CH3)3 C CH2C(CH3)3
(ii) (CH3)2 C(C2H5)2
(iii) tetra – tert-butylmethane
Solution
(i) 2, 2, 4, 4-Tetramethylpentane
(ii) 3, 3-Dimethylpentane
(iii) 3,3-Di-tert-butyl -2, 2, 4, 4 – tetramethylpentane
If it is important to write the correct IUPAC name for a given structure, it is equally important to write the correct structure from the given IUPAC name. To do this, first of all, the longest chain of carbon atoms corresponding to the parent alkane is written. Then after numbering it, the substituents are attached to the correct carbon atoms and finally valence of each carbon atom is satisfied by putting the correct number of hydrogen atoms. This can be clarified by writing the structure of 3-ethyl-2, 2-dimethylpentane in the following steps :
i) Draw the chain of five carbon atoms:
C – C – C – C – C
ii) Give number to carbon atoms:
C1– C2– C3– C4– C5
iii) Attach ethyl group at carbon 3 and two methyl groups at carbon 2
iv) Satisfy the valence of each carbon atom by putting requisite number of hydrogen atoms :
Thus we arrive at the correct structure. If you have understood writing of structure from the given name, attempt the following problems
Problem 13.4
Write structural formulas of the following compounds :
(i) 3, 4, 4, 5-Tetramethylheptane
(ii) 2,5-Dimethyhexane
Problem 13.5
Write structures for each of the following compounds. Why are the given names incorrect? Write correct IUPAC names.
(i) 2-Ethylpentane
(ii) 5-Ethyl – 3-methylheptane
Longest chain is of six carbon atoms and not that of five. Hence, correct name is 3-Methylhexane.
Numbering is to be started from the end which gives lower number to ethyl group. Hence, correct name is 3-ethyl-5- methylheptane.
13.2.2 Preparation
Petroleum and natural gas are the main sources of alkanes. However, alkanes can be prepared by following methods :
1. From unsaturated hydrocarbons
Dihydrogen gas adds to alkenes and alkynes in the presence of finely divided catalysts like platinum, palladium or nickel to form alkanes. This process is called hydrogenation. These metals adsorb dihydrogen gas on their surfaces and activate the hydrogen – hydrogen bond. Platinum and palladium catalyse the reaction at room temperature but relatively higher temperature and pressure are required with nickel catalysts.
2. From alkyl halides
i) Alkyl halides (except fluorides) on reduction with zinc and dilute hydrochloric acid give alkanes.
ii) Alkyl halides on treatment with sodium metal in dry ethereal (free from moisture) solution give higher alkanes. This reaction is known as Wurtz reaction and is used for the preparation of higher alkanes containing even number of carbon atoms.
What will happen if two different alkyl halides are taken?
3. From carboxylic acids
i) Sodium salts of carboxylic acids on heating with soda lime (mixture of sodium hydroxide and calcium oxide) give alkanes containing one carbon atom less than the carboxylic acid. This process of elimination of carbon dioxide from a carboxylic acid is known as decarboxylation.
Problem 13.6
Sodium salt of which acid will be needed for the preparation of propane ? Write chemical equation for the reaction.
Solution
Butanoic acid,
ii) Kolbe’s electrolytic method An aqueous solution of sodium or potassium salt of a carboxylic acid on electrolysis gives alkane containing even number of carbon atoms at the anode.
The reaction is supposed to follow the following path
Methane cannot be prepared by this method. Why?
13.2.3 Properties
Physical properties
Alkanes are almost non-polar molecules because of the covalent nature of C-C and C-H bonds and due to very little difference of electronegativity between carbon and hydrogen atoms. They possess weak van der Waals forces. Due to the weak forces, the first four members, C1 to C4 are gases, C5 to C17 are liquids and those containing 18 carbon atoms or more are solids at 298 K. They are colourless and odourless. What do you think about solubility of alkanes in water based upon nonpolar nature of alkanes? Petrol is a mixture of hydrocarbons and is used as a fuel for automobiles. Petrol and lower fractions of petroleum are also used for dry cleaning of clothes to remove grease stains. On the basis of this observation, what do you think about the nature of the greasy substance? You are correct if you say that grease (mixture of higher alkanes) is non-polar and, hence, hydrophobic in nature. It is generally observed that in relation to solubility of substances in solvents,polar substances are soluble in polar solvents, whereas the non-polar ones in non-polar solvents i.e., like dissolves like.
Boiling point (b.p.) of different alkanes are given in Table 13.2 from which it is clear that there is a steady increase in boiling point with increase in molecular mass. This is due to the fact that the intermolecular van der Waals forces increase with increase of the molecular size or the surface area of the molecule.
You can make an interesting observation by having a look on the boiling points of three isomeric pentanes viz., (pentane, 2-methylbutane and 2,2-dimethylpropane). It is observed (Table 13.2) that pentane having a continuous chain of five carbon atoms has the highest boiling point (309.1K) whereas 2,2 – dimethylpropane boils at 282.5K. With increase in number of branched chains, the molecule attains the shape of a sphere. This results in smaller area of contact and therefore weak intermolecular forces between spherical molecules, which are overcome at relatively lower temperatures.
| Molecular formula | Name | Molecular mass/m | b.p./(K) | m.p./(K) |
|---|---|---|---|---|
| CH4 | Methane | 16 | 111.0 | 90.5 |
| C2H6 | Ethane | 30 | 184.4 | 101.0 |
| C3H8 | propane | 44 | 230.9 | 85.3 |
| C4H10 | Butane | 58 | 272.4 | 134.6 |
| C4H10 | 2-Methylpropane | 58 | 261.0 | 114.7 |
| C5H12 | pentane | 72 | 309.1 | 143.3 |
| C5H12 | 2-Methylbutane | 72 | 300.9 | 113.1 |
| C5H12 | 2,2-Dimethylpropane | 72 | 282.5 | 256.4 |
| C6H14 | Hexane | 86 | 341.9 | 178.5 |
| C7H16 | Heptane | 100 | 371.4 | 182.4 |
| C8H18 | Octane | 114 | 398.7 | 216.2 |
| C9H20 | Nonane | 128 | 423.8 | 222.0 |
| C10H22 | Decane | 142 | 447.1 | 243.3 |
| C20H42 | Eicosane | 282 | 615.0 | 236.2 |
Chemical properties
As already mentioned, alkanes are generally inert towards acids, bases, oxidising and reducing agents. However, they undergo the following reactions under certain conditions.
One or more hydrogen atoms of alkanes can be replaced by halogens, nitro group and sulphonic acid group. Halogenation takes place either at higher temperature (573-773 K) or in the presence of diffused sunlight or ultraviolet light. Lower alkanes do not undergo nitration and sulphonation reactions. These reactions in which hydrogen atoms of alkanes are substituted are known as substitution reactions. As an example, chlorination of methane is given below:
Halogenation
It is found that the rate of reaction of alkanes with halogens is F2Cl2Br2I2. Rate of replacement of hydrogens of alkanes is : 3° > 2° > 1°. Fluorination is too violent to be controlled. Iodination is very slow and a reversible reaction. It can be carried out in the presence of oxidizing agents like HIO3orHNO3.
Halogenation is supposed to proceed via free radical chain mechanism involving three steps namely initiation, propagation and
termination as given below:
Mechanism
(i) Initiation : The reaction is initiated by homolysis of chlorine molecule in the presence of light or heat. The Cl-Cl bond is weaker than the C-C and C-H bond and hence, is easiest to break.
(ii) Propagation : Chlorine free radical attacks the methane molecule and takes the reaction in the forward direction by breaking the C-H bond to generate methyl free radical with the formation of H-Cl.
The methyl radical thus obtained attacks the second molecule of chlorine to form CH3– Cl with the liberation of another chlorine free radical by homolysis of chlorine molecule.
The chlorine and methyl free radicals generated above repeat steps (a) and (b) respectively and thereby setup a chain of reactions. The propagation steps (a) and (b) are those which directly give principal products, but many other propagation steps are possible and may occur. Two such steps given below explain how more highly haloginated products are formed.
(iii)Termination: The reaction stops after some time due to consumption of reactants and / or due to the following side reactions :
The possible chain terminating steps are :
Though in (c), CH3-Cl, the one of the products is formed but free radicals are consumed and the chain is erminated. The above mechanism helps us to understand the reason for the formation of ethane as a byproduct during hlorination of methane.
2. Combustion
Alkanes on heating in the presence of air or dioxygen are completely oxidized to carbon dioxide and water with the evolution of large amount of heat.
The general combustion equation for any alkane is :
CnH2n+2+(3n+1/2)O2→ nCO2+(n+1)H2O (13.19)
Due to the evolution of large amount of heat during combustion, alkanes are used as fuels.
During incomplete combustion of alkanes with insufficient amount of air or dioxygen, carbon black is formed which is used in the manufacture of ink, printer ink, black pigments and as filters.
3. Controlled oxidation
Alkanes on heating with a regulated supply of dioxygen or air at high pressure and in the presence of suitable catalysts give a variety of oxidation products.
(iv) Ordinarily alkanes resist oxidation but alkanes having tertiary H atom can be oxidized to corresponding alcohols by
potassium permanganate.
4. Isomerisation
n-Alkanes on heating in the presence of anhydrous aluminium chloride and hydrogen chloride gas isomerise to branched chain
alkanes. Major products are given below. Some minor products are also possible which you can think over. Minor products are generally not reported in organic reactions.
5. Aromatization
n-Alkanes having six or more carbon atoms on heating to 773K at 10-20 atmospheric pressure in the presence of oxides of
vanadium, molybdenum or chromium supported over alumina get dehydrogenated and cyclised to benzene and its homologues.
This reaction is known as aromatization or reforming.
Toluene (C7H8) is methyl derivative of benzene. Which alkane do you suggest for preparation of toluene ?
6. Reaction with steam
Methane reacts with steam at 1273 K in the presence of nickel catalyst to form carbon monoxide and dihydrogen. This method is used for industrial preparation of dihydrogen gas
7. Pyrolysis
Higher alkanes on heating to higher temperature decompose into lower alkanes, alkenes etc. Such a decomposition reaction
into smaller fragments by the application of heat is called pyrolysis or cracking.
Pyrolysis of alkanes is believed to be a free radical reaction. Preparation of oil gas or petrol gas from kerosene oil or petrol involves the principle of pyrolysis. For example, dodecane, a constituent of kerosene oil on heating to 973K in the presence of platinum, palladium or nickel gives a mixture of heptane and pentene.
13.2.4 Conformations
Alkanes contain carbon-carbon sigma (σ) bonds. Electron distribution of the sigma molecular orbital is symmetrical around the internuclear axis of the C-C bond which is not disturbed due to rotation about its axis. This permits free rotation about C-C single bond. This rotation results into different spatial arrangements of atoms in space which can change into one another. Such spatial arrangements of atoms which can be converted into one another by rotation around a C-C single bond are called conformations or conformers or rotamers. Alkanes can thus have infinite number of conformations by rotation around C-C single bonds. However, it may be remembered that rotation around a C-C single bond is not completely free. It is hindered by a small energy barrier of 1-20 kJ mol-1 due to weak repulsive interaction between the adjacent bonds. Such a type of repulsive interaction is called torsional strain.
Conformations of ethane : Ethane molecule (C2H6) contains a carbon – carbon single bond with each carbon atom attached to three hydrogen atoms. Considering the ball and stick model of ethane, keep one carbon atom stationary and rotate the other carbon atom around the C-C axis. This rotation results into infinite number of spatial arrangements of hydrogen atoms attached to one carbon atom with respect to the hydrogen atoms attached to the other carbon atom. These are called conformational isomers (conformers). Thus there are infinite number of conformations of ethane. However, there are two extreme cases. One such conformation in which hydrogen atoms attached to two carbons are as closed together as possible is called eclipsed conformation and the other in which hydrogens are as far apart as possible is known as the staggered conformation. Any other intermediate conformation is called a skew conformation.It may be remembered that in all the conformations, the bond angles and the bond lengths remain the same. Eclipsed and the staggered conformations can be epresented by Sawhorse and Newman projections.
1. Sawhorse projections
In this projection, the molecule is viewed along the molecular axis. It is then projected on paper by drawing the central C-C bond as a somewhat longer straight line. Upper end of the line is slightly tilted towards right or left hand side. The front carbon is shown at the lower end of the line, whereas the rear carbon is shown at the upper end. Each carbon has three lines attached to it corresponding to three hydrogen atoms. The lines are inclined at an angle of 120° to each other. Sawhorse projections of eclipsed and staggered conformations of ethane are depicted in Fig. 13.2.
2. Newman projections
In this projection, the molecule is viewed at the C-C bond head on. The carbon atom nearer to the eye is represented by a point. Three hydrogen atoms attached to the front carbon atom are shown by three lines drawn at an angle of 120° to each other. The rear carbon atom (the carbon atom away from the eye) is represented by a circle and the three hydrogen atoms are shown attached to it by the shorter lines drawn at an angle of 120° to each other. The Newman’s projections are depicted in Fig. 13.3.
Relative stability of conformations: As mentioned earlier, in staggered form of ethane, the electron clouds of carbon- ydrogen bonds are as far apart as possible. Thus, there are minimum repulsive forces, minimum energy and maximum stability of the molecule. On the other hand, when the staggered form changes into the eclipsed form, the electron clouds of the carbon – hydrogen bonds come closer to each other resulting in increase in electron cloud repulsions. To check the increased repulsive forces, molecule will have to possess more energy and thus has lesser stability. As already mentioned, the repulsive interaction between the electron clouds, which affects stability of a conformation, is called torsional strain. Magnitude of torsional strain depends upon the angle of rotation about C-C bond. This angle is also called dihedral angle or torsional angle. Of all the conformations of ethane, the staggered form has the least torsional strain and the eclipsed form, the maximum torsional strain. Thus it may be inferred that rotation around C-C bond in ethane is not completely free. The energy difference between the two extreme forms is of the order of 12.5 kJ mol-1, which is very small. Even at ordinary temperatures, the ethane molecule gains thermal or kinetic energy sufficient enough to overcome this energy barrier of 12.5 kJ mol-1 through intermolecular collisions. Thus, it can be said that rotation about carbon-carbon single bond in ethane is almost free for all practical purposes. It has not been possible to separate and isolate different conformational isomers of ethane.
13.3 ALKENES
Alkenes are unsaturated hydrocarbons containing at least one double bond. What should be the general formula of alkenes? If there is one double bond between two carbon atoms in alkenes, they must possess two hydrogen atoms less than alkanes. Hence, general formula for alkenes is CnH2n. Alkenes are also known as olefins (oil forming) since the first member, ethylene or ethene (C2H4) was found to form an oily liquid on reaction with chlorine.
13.3.1 Structure of Double Bond
Carbon-carbon double bond in alkenes consists of one strong sigma (σ) bond (bond enthalpy about 397 kJ mol-1) due to head-on overlapping of sp2 hybridised orbitals and one weak pi (π) bond (bond enthalpy about 284 kJ mol -1) obtained by lateral or sideways overlapping of the two 2p orbitals of the two carbon atoms. The double bond is shorter in bond length (134 pm) than the C-C single bond (154 pm). You have already read that the pi (π) bond is a weaker bond due to poor sideways overlapping between the two 2p orbitals. Thus, the presence of the pi (π) bond makes alkenes behave as sources of loosely held mobile electrons. Therefore, alkenes are easily attacked by reagents or compounds which are in search of electrons. Such reagents are called electrophilic reagents. The presence of weaker π-bond makes alkenes unstable molecules in comparison to alkanes and thus, alkenes can be changed into single bond compounds by combining with the electrophilic reagents. Strength of the double bond (bond enthalpy, 681 kJ mol-1) is greater than that of a carbon-carbon single bond in ethane (bond enthalpy, 348 kJ mol-1). Orbital diagrams of ethene molecule are shown in Figs. 13.4 and 13.5.
13.3.2 Nomenclature
For nomenclature of alkenes in IUPAC system, the longest chain of carbon atoms containing the double bond is selected. umbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. It may be remembered that first member of alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. As already mentioned, first stable member of alkene series is C2H4 known as ethylene (common) or ethene (IUPAC). IUPAC names of a few members of alkenes are given below :
Problem 13.7
Write IUPAC names of the following compounds:
Solution
(i) 2,8-Dimethyl-3, 6-decadiene;
(ii) 1,3,5,7 Octatetraene;
(iii) 2-n-Propylpent-1-ene;
(iv) 4-Ethyl-2,6-dimethyl-dec-4-ene;
Problem 13.8
Calculate number of sigma (σ) and pi (π) bonds in the above structures (i-iv).
Solution
σ bonds : 33, π bonds : 2
σ bonds : 7, π bonds : 4
σ bonds : 23, π bond : 1
σ bonds : 41, π bond : 1
13.3.3 Isomerism
Alkenes show both structural isomerism and geometrical isomerism.
Structural isomerism : As in alkanes, ethene (C2H4) and propene (C3H6) can have only one structure but alkenes higher than propene have different structures. Alkenes possessing C4H8 as molecular formula can be written in the following three ways:
Structures I and III, and II and III are the examples of chain isomerism whereas structures I and II are position isomers.
Problem 13.9
Write structures and IUPAC names of different structural isomers of alkenes corresponding to C5H10.
Geometrical isomerism: Doubly bonded carbon atoms have to satisfy the remaining two valences by joining with two atoms or groups. If the two atoms or groups attached to each carbon atom are different, they can be represented by YX C = C XY like structure. YX C = C XY can be represented in space in the following two ways :
In (a), the two identical atoms i.e., both the X or both the Y lie on the same side of the double bond but in (b) the two X or two Y lie across the double bond or on the opposite sides of the double bond. This results in different geometry of (a) and (b) i.e. disposition of atoms or groups in space in the two arrangements is different. Therefore, they are stereoisomers. They would have the same geometry if atoms or groups around C=C bond can be rotated but rotation around C=C bond is not free. It is restricted. For understanding this concept, take two pieces of strong cardboards and join them with the help of two nails. Hold one cardboard in your one hand and try to rotate the other. Can you really rotate the other cardboard ? The answer is no. The rotation is restricted. This illustrates that the restricted rotation of atoms or groups around the doubly bonded carbon atoms gives rise to different geometries of such compounds. The stereoisomers of this type are called geometrical isomers. The isomer of the type (a), in which two identical atoms or groups lie on the same side of the double bond is called cis isomer and the other isomer of the type (b), in which identical atoms or groups lie on the opposite sides of the double bond is called trans isomer . Thus cis and trans isomers have the same structure but have different configuration (arrangement of atoms or groups in space). Due to different arrangement of atoms or groups in space, these isomers differ in their properties like melting point, boiling point, dipole moment, solubility etc. Geometrical or cis-trans isomers of but-2-ene are represented below :
Cis form of alkene is found to be more polar than the trans form. For example, dipole moment of cis-but-2-ene is 0.33 Debye, whereas, dipole moment of the trans form is almost zero or it can be said that trans-but-2-ene is non-polar. This can be understood by drawing geometries of the two forms as given below from which it is clear that in the trans-but-2-ene, the two methyl groups are in opposite directions, Threfore, dipole moments of C-CH3 bonds cancel, thus making the trans form non-polar.
In the case of solids, it is observed that the trans isomer has higher melting point than the cis form.
Geometrical or cis-trans isomerism is also shown by alkenes of the types XYC = CXZ and XYC = CZW
Problem 13.10
Draw cis and trans isomers of the following compounds. Also write their IUPAC names :
(i) CHCl = CHCl
(ii) C2H5CCH3 = CCH3C2H5
Problem 13.11
Which of the following compounds will show cis-trans isomerism?
(i) (CH3)2C = CH – C2H5
(ii) CH2 = CBr2
(iii) C6H5CH = CH – CH3
(iv) CH3CH = CClCH3
Solution
(iii) and (iv). In structures (i) and (ii), two identical groups are attached to one of the doubly bonded carbon atom.
13.3.4 Preparation
1. From alkynes: Alkynes on partial reduction with calculated amount of dihydrogen in the presence of palladised charcoal partially deactivated with poisons like sulphur compounds or quinoline give alkenes. Partially deactivated palladised charcoal is known as Lindlar’s catalyst. Alkenes thus obtained are having cis geometry. However, alkynes on reduction with sodium in liquid ammonia form trans alkenes.
Will propene thus obtained show geometrical isomerism? Think for the reason in support of your answer.
2. From alkyl halides: Alkyl halides (R-X) on heating with alcoholic potash (potassium hydroxide dissolved in alcohol,say, ethanol) eliminate one molecule of halogen acid to form alkenes. This reaction is known as dehydrohalogenation i.e.,removal of halogen acid. This is example of β-elimination reaction, since hydrogen atom is eliminated from the β carbon atom (carbon atom next to the carbon to which halogen is attached).
Nature of halogen atom and the alkyl group determine rate of the reaction. It is observed that for halogens, the rate is: iodine > bromine > chlorine, while for alkyl groups it is : tert > secondary > primary.
3. From vicinal dihalides: Dihalides in which two halogen atoms are attached to two adjacent carbon atoms are known as vicinal dihalides. Vicinal dihalides on treatment with zinc metal lose a molecule of ZnX2 to form an alkene. This reaction is known as dehalogenation.
CH2Br −CH2Br+ Zn→CH2 =CH2 +ZnBr2
(13.35)
CH3CHBr-CH2Br+Zn→CH3CH=CH+ZnBr2
(13.36)
4. From alcohols by acidic dehydration: You have read during nomenclature of different homologous series in Unit 12 that alcohols are the hydroxy derivatives of alkanes. They are represented by R-OH where, R is CnH2n+1. Alcohols on heating with concentrated sulphuric acid form alkenes with the elimination of one water molecule. Since a water molecule is eliminated from the alcohol molecule in the presence of an acid, this reaction is known as acidic dehydration of alcohols. This reaction is also the example of β-elimination reaction since -OH group takes out one hydrogen atom from the β-carbon atom.
13.3.5 Properties
Physical properties
Alkenes as a class resemble alkanes in physical properties, except in types of isomerism and difference in polar nature. The first three members are gases, the next fourteen are liquids and the higher ones are solids. Ethene is a colourless gas with a faint sweet smell. All other alkenes are colourless and odourless, insoluble in water but fairly soluble in nonpolar solvents like benzene, petroleum ether. They show a regular increase in boiling point with increase in size i.e., every – CH2 group added increases boiling point by 20-30 K. Like alkanes, straight chain alkenes have higher boiling point than isomeric branched chain compounds.
Chemical properties
Alkenes are the rich source of loosely held pi (π) electrons, due to which they show addition reactions in which the eleectrophiles add on to the carbon-carbon double bond to form the addition products. Some reagents also add by free radical mechanism. There are cases when under special conditions, alkenes also undergo free radical substitution reactions. Oxidation and ozonolysis reactions are also quite prominent in alkenes. A brief description of different reactions of alkenes is given below:
1. Addition of dihydrogen: Alkenes add up one molecule of dihydrogen gas in the presence of finely divided nickel, palladium or platinum to form alkanes (Section 13.2.2)
2. Addition of halogens : Halogens like bromine or chlorine add up to alkene to form vicinal dihalides. However, iodine does not show addition reaction under normal conditions. The reddish orange colour of bromine solution in carbon tetrachloride is discharged when bromine adds up to an unsaturation site. This reaction is used as a test for unsaturation. Addition of halogens to alkenes is an example of electrophilic addition reaction involving cyclic halonium ion formation which you will study in higher classes.
3. Addition of hydrogen halides: Hydrogen halides (HCl, HBr,HI) add up to alkenes to form alkyl halides. The order of reactivity of the hydrogen halides is HI > HBr > HCl. Like addition of halogens to alkenes, addition of hydrogen halides is also an example of electrophilic addition reaction. Let us illustrate this by taking addition of HBr to symmetrical and unsymmetrical alkenes
Addition reaction of HBr to symmetrical alkenes
Addition reactions of HBr to symmetrical alkenes (similar groups attached to double bond) take place by electrophilic addition mechanism.
Addition reaction of HBr to unsymmetrical alkenes (Markovnikov Rule)
How will H – Br add to propene ? The two possible products are I and II.
Markovnikov, a Russian chemist made a generalisation in 1869 after studying such reactions in detail. These generalisations led Markovnikov to frame a rule called Markovnikov rule. The rule states that negative part of the addendum (adding molecule) gets attached to that carbon atom which possesses lesser number of hydrogen atoms. Thus according to this rule, product I i.e., 2-bromopropane is expected. In actual practice, this is the principal product of the reaction. This generalisation of Markovnikov rule can be better understood in terms of mechanism of the reaction.
Mechanism
Hydrogen bromide provides an electrophile, H+, which attacks the double bond to form carbocation as shown below :
(i) The secondary carbocation (b) is more stable than the primary carbocation (a), therefore, the former predominates because it is formed at a faster rate.
(ii) The carbocation (b) is attacked by Br– ion to form the product as follows :
Anti Markovnikov addition or peroxide effect or Kharash effect
In the presence of peroxide, addition of HBr to unsymmetrical alkenes like propene takes place contrary to the Markovnikov rule. This happens only with HBr but not with HCl and Hl. This addition reaction was observed by M.S. Kharash and F.R. Mayo in 1933 at the University of Chicago. This reaction is known as peroxide or Kharash effect or addition reaction anti to Markovnikov rule.
Mechanism : Peroxide effect proceeds via free radical chain mechanism as given below:
The secondary free radical obtained in the above mechanism (step iii) is more stable than the primary. This explains the formation of 1-bromopropane as the major product. It may be noted that the peroxide effect is not observed in addition of HCl and HI. This may be due to the fact that the H-Cl bond being stronger (430.5 kJ mol-1) than H-Br bond (363.7 kJ mol-1), is not cleaved by the free radical, whereas the H-I bond is weaker (296.8 kJ mol-1) and iodine free radicals combine to form iodine molecules instead of adding to the double bond.
Problem 13.12
Write IUPAC names of the products obtained by addition reactions of HBr to hex-1-ene
(i) in the absence of peroxide and
(ii) in the presence of peroxide
4. Addition of sulphuric acid : Cold concentrated sulphuric acid adds to alkenes in accordance with Markovnikov rule to form alkyl hydrogen sulphate by the electrophilic addition reaction.
5. Addition of water : In the presence of a few drops of concentrated sulphuric acid alkenes react with water to form alcohols, in accordance with the Markovnikov rule.
6. Oxidation: Alkenes on reaction with cold, dilute, aqueous solution of potassium permanganate (Baeyer’s reagent) produce vicinal glycols. Decolorisation of KMnO4 solution is used as a test for unsaturation.
b) Acidic potassium permanganate or acidic potassium dichromate oxidises alkenes to ketones and/or acids depending upon the nature of the alkene and the experimental conditions
7. Ozonolysis : Ozonolysis of alkenes involves the addition of ozone molecule to alkene to form ozonide, and then cleavage of the ozonide by Zn-H2O to smaller molecules. This reaction is highly useful in detecting the position of the double bond in alkenes or other unsaturated compounds.
8. Polymerisation: You are familiar with polythene bags and polythene sheets. Polythene is obtained by the combination of large number of ethene molecules at high temperature, high pressure and in the presence of a catalyst. The large molecules thus obtained are called polymers. This reaction is known as polymerisation. The simple compounds from which polymers are made are called monomers. Other alkenes also undergo polymerisation.
Polymers are used for the manufacture of plastic bags, squeeze bottles, refrigerator dishes, toys, pipes, radio and T.V. cabinets etc.
Polypropene is used for the manufacture of milk crates, plastic buckets and other moulded articles. Though these materials have now become common, excessive use of polythene and polypropylene is a matter of great concern for all of us.
13.4 ALKYNES
Like alkenes, alkynes are also unsaturated hydrocarbons. They contain at least one triple bond between two carbon atoms. The number of hydrogen atoms is still less in alkynes as compared to alkenes or alkanes. Their general formula is CnH2n-2.
The first stable member of alkyne series is ethyne which is popularly known as acetylene. Acetylene is used for arc welding purposes in the form of oxyacetylene flame obtained by mixing acetylene with oxygen gas. Alkynes are starting materials for a large number of organic compounds. Hence, it is interesting to study this class of organic compounds.
13.4.1 Nomenclature and Isomerism
In common system, alkynes are named as derivatives of acetylene. In IUPAC system, they are named as derivatives of the corresponding alkanes replacing ‘ane’ by the suffix ‘yne’. The position of the triple bond is indicated by the first triply bonded carbon. Common and IUPAC names of a few members of alkyne series are given in Table 13.2.
| Value of n | Formula | Structure | Common name | IUPAC |
|---|---|---|---|---|
| 2 | C2H2 | H-C≡CH | Acetylene | Ethyne |
| 3 | C3H4 | CH3-C≡CH | Methylacetylene | Propyne |
| 4 | C4H6 | CH3CH2-C≡CH | Ethylacetylene | But-1-yne |
| 4 | C4H6 | CH3-C≡C-CH3 | Dimethylacetylene | But-2-yne |
You have already learnt that ethyne and propyne have got only one structure but there are two possible structures for butyne – (i) but-1-yne and (ii) but-2-yne. Since these two compounds differ in their structures due to the position of the triple bond, they are known as position isomers. In how many ways, you can construct the structure for the next homologue i.e., the next alkyne with molecular formula C5H8? Let us try to arrange five carbon atoms with a continuous chain and with a side chain.
Following are the possible structures :
Problem 13.13
Write structures of different isomers corresponding to the 5th member of alkyne series. Also write IUPAC names of all the isomers. What type of isomerism is exhibited by different pairs of isomers?
Solution
5th member of alkyne has the molecular formula C6H10. The possible isomers are:
13.4.2 Structure of Triple Bond
Ethyne is the simplest molecule of alkyne series. Structure of ethyne is shown in Fig. 13.6.
Each carbon atom of ethyne has two sp hybridised orbitals. Carbon-carbon sigma (σ) bond is obtained by the head-on overlapping of the two sp hybridised orbitals of the two carbon atoms. The remaining sp hybridised orbital of each carbon atom undergoes overlapping along the internuclear axis with the 1s orbital of each of the two hydrogen atoms forming two C-H sigma bonds. H-C-C bond angle is of 180°. Each carbon has two unhybridised p orbitals which are perpendicular to each other as well as to the plane of the C-C sigma bond. The 2p orbitals of one carbon atom are parallel to the 2p orbitals of the other carbon atom, which undergo lateral or sideways overlapping to form two pi (π) bonds between two carbon atoms. Thus ethyne molecule consists of one C-C σ bond, two C-H σ bonds and two C-C π bonds. The strength of C≡C bond (bond enthalpy 823 kJ mol-1) is more than those of C=C bond (bond enthalpy 681 kJ mol-1) and C-C bond (bond enthalpy 348 kJ mol-1). The C≡C bond length is shorter (120 pm) than those of C=C (133 pm) and C-C (154 pm). Electron cloud between two carbon atoms is cylindrically symmetrical about the internuclear axis. Thus, ethyne is a linear molecule.
13.4.3 Preparation
1. From calcium carbide: On industrial scale, ethyne is prepared by treating calcium carbide with water. Calcium carbide is prepared by heating quick lime with coke. Quick lime can be obtained by heating limestone as shown in the following reactions:
CaO+ 3C → CaC2 + CO (13.56)
Calcium carbide
CaC2+2H2O→Ca(OH)2+C2H2 (13.57)
2. From vicinal dihalides : Vicinal dihalides on treatment with alcoholic potassium hydroxide undergo dehydrohalogenation. One molecule of hydrogen halide is eliminated to form alkenyl halide which on treatment with sodamide gives alkyne.
13.4.4 Properties
Physical properties
Physical properties of alkynes follow the same trend of alkenes and alkanes. First three members are gases, the next eight are liquids and the higher ones are solids. All alkynes are colourless. Ethyene has characteristic odour. Other members are odourless. Alkynes are weakly polar in nature. They are lighter than water and immiscible with water but soluble in organic solvents like ethers, carbon tetrachloride and benzene. Their melting point, boiling point and density increase with increase in molar mass.
Chemical properties
Alkynes show acidic nature, addition reactions and polymerisation reactions as follows :
A. Acidic character of alkyne: sodium metal and sodamide (NaNH2) are strong bases. They react with ethyne to form sodium acetylide with the liberation of dihydrogen gas. These reactions have not been observed in case of ethene and ethane thus indicating that ethyne is acidic in nature in comparison to ethene and ethane. Why is it so ? Has it something to do with their structures and the hybridisation ? You have read that hydrogen atoms in ethyne are attached to the sp hybridised carbon atoms whereas they are attached to sp2 hybridised carbon atoms in ethene and sp3 hybridised carbons in ethane. Due to the maximum percentage of s character (50%), the sp hybridised orbitals of carbon atoms in ethyne molecules have highest electronegativity; hence, these attract the shared electron pair of the C-H bond of ethyne to a greater extent than that of the sp2 hybridised orbitals of carbon in ethene and the sp3 hybridised orbital of carbon in ethane. Thus in ethyne, hydrogen atoms can be liberated as protons more easily as compared to ethene and ethane. Hence, hydrogen atoms of ethyne attached to triply bonded carbon atom are acidic in nature. You may note that the hydrogen atoms attached to the triply bonded carbons are acidic but not all the hydrogen atoms of alkynes.
HC ≡ CH + Na → HC ≡ C–Na++1/2H2
Monosodium ethynide (13.59)
HC ≡ C–Na++Na+C– ≡ C–Na++1/2H2
Disodium ethynide (13.60)
CH3-C ≡ C-H+ Na+NH2–
↓
CH3-C ≡ C–Na++NH3 (13.61)
sodium propynide
These reactions are not shown by alkenes and alkanes, hence used for distinction between alkynes, alkenes and alkanes. What
about the above reactions with but-1-yne and but-2-yne ? Alkanes, alkenes and alkynes follow the following trend in their acidic behaviour :
i) HC≡CH > H2C=CH > CH3–CH3
ii) HC≡CH>CH3–C≡CH>>CH3–C ≡C–CH3
B. Addition reactions: Alkynes contain a triple bond, so they add up, two molecules of dihydrogen, halogen, hydrogen halides etc.Formation of the addition product takes place according to the following steps.
The addition product formed depends upon stability of vinylic cation. Addition in unsymmetrical alkynes takes place according
to Markovnikov rule. Majority of the reactions of alkynes are the examples of electrophilic addition reactions. A few addition reactions are given below:
(i) Addition of dihydrogen
(ii) Addition of halogens
Reddish orange colour of the solution of bromine in carbon tetrachloride is decolourised. This is used as a test for unsaturation.
(iii) Addition of hydrogen halides
Two molecules of hydrogen halides (HCl, HBr, HI) add to alkynes to form gem dihalides (in which two halogens are attached to the same carbon atom)
(iv) Addition of water
Like alkanes and alkenes, alkynes are also immiscible and do not react with water. However, one molecule of water adds to alkynes on warming with mercuric sulphate and dilute sulphuric acid at 333 K to form carbonyl compounds.
(v) Polymerisation
(a) Linear polymerisation: Under suitable conditions, linear polymerisation of ethyne takes place to produce polyacetylene or polyethyne which is a high molecular weight polyene containing repeating units of (CH = CH – CH = CH ) and can be represented as -( CH = CH – CH = CH)n – Under special conditions, this polymer conducts electricity.Thin film of polyacetylene can be used as electrodes in batteries. These films are good conductors, lighter and cheaper than the metal conductors.
(b) Cyclic polymerisation: Ethyne on passing through red hot iron tube at 873K undergoes cyclic polymerization. Three molecules polymerise to form benzene, which is the starting molecule for the preparation of derivatives of benzene, dyes, drugs and large number of other organic compounds. This is the best route for entering from aliphatic to aromatic compounds as discussed below:
Problem 13.14
How will you convert ethanoic acid into benzene?
13.5 AROMATIC HYDROCARBON
These hydrocarbons are also known as ‘arenes’. Since most of them possess pleasant odour (Greek; aroma meaning pleasant smelling), the class of compounds was named as ‘aromatic compounds’. Most of such compounds were found to contain benzene ring. Benzene ring is highly unsaturated but in a majority of reactions of aromatic compounds, the unsaturation of benzene ring is retained. However, there are examples of aromatic hydrocarbons which do not contain a benzene ring but instead contain other highly unsaturated ring. Aromatic compounds containing benzene ring are known as benzenoids and those not containing a benzene ring are known as non-benzenoids. Some examples of arenes are given below:
13.5.1 Nomenclature and Isomerism
The nomenclature and isomerism of aromatic hydrocarbons has already been discussed in Unit 12. All six hydrogen atoms in benzene are equivalent; so it forms one and only one type of monosubstituted product. When two hydrogen atoms in benzene are replaced by two similar or different monovalent atoms or groups, three different position isomers are possible. The 1, 2 or 1, 6 is known as the ortho (o-), the 1, 3 or 1, 5 as meta (m-) and the 1, 4 as para (p-) disubstituted compounds. A few examples of derivatives of benzene are given below:
| Friedrich August Kekulé,a German chemist was born in 1829 at Darmsdt in Germany. He became Professor in 1856 and Fellow of Royal Society in 1875. He made major contribution to structural organic chemistry by proposing in 1865 that carbon atoms can join to one another to form chains and later in 1865,he found an answer to the challenging problem of benzene structure by suggesting that these chains can close to form rings. He gave the dynamic structural formula to benzene which forms the basis for its modern electronic structure. He described the discovery of benzene structure later as: “I was sitting writing at my text book,but the work did not progress; my thoughts were elsewhere.I turned my chair to the fire, and dozed. Again the atoms were gambolling before my eyes. This time the smaller groups kept modestly in the background. My mental eye, rendered more acute by repeated visions of this kind, could now distinguish larger structures of manifold conformations; long rows,sometimes more closely fitted together; all twisting and turning in snake like motion. But look! What was that? One of the snakes had seized hold of it’s own tail, and the form whirled mockingly before my eyes. As if by a flash of lightning I woke;…. I spent the rest of the night working out the consequences of the hypothesis. Let us learn to dream, gentlemen, and then perhaps we shall learn the truth but let us beware of making our dreams public before they have been approved by the waking mind.”( 1890). One hundred years later, on the occasion of Kekulé’s centenary celebrations a group of compounds having polybenzenoid structures have been named as Kekulenes. |
13.5.2 Structure of Benzene
Benzene was isolated by Michael Faraday in 1825. The molecular formula of benzene, C6H6, indicates a high degree of unsaturation. This molecular formula did not account for its relationship to corresponding alkanes, alkenes and alkynes which you have studied in earlier sections of this unit. What do you think about its possible structure? Due to its unique properties and unusual stability, it took several years to assign its structure. Benzene was found to be a stable molecule and found to form a triozonide which indicates the presence of three double bonds. Benzene was further found to produce one and only one monosubstituted derivative which indicated that all the six carbon and six hydrogen atoms of benzene are identical. On the basis of this observation August Kekulé in 1865 proposed the following structure for benzene having cyclic arrangement of six carbon atoms with alternate single and double bonds and one hydrogen atom attached to each carbon atom.
The Kekulé structure indicates the possibility of two isomeric 1, 2-dibromobenzenes. In one of the isomers, the bromine atoms are attached to the doubly bonded carbon atoms whereas in the other, they are attached to the singly bonded carbons.
However, benzene was found to form only one ortho disubstituted product. This problem was overcome by Kekulé by suggesting the concept of oscillating nature of double bonds in benzene as given below.
Even with this modification, Kekulé structure of benzene fails to explain unusual stability and preference to substitution reactions than addition reactions, which could later on be explained by resonance.
Resonance and stability of benzene
According to Valence Bond Theory, the concept of oscillating double bonds in benzene is now explained by resonance. Benzene is a hybrid of various resonating structures. The two structures, A and B given by Kekulé are the main contributing structures. The hybrid structure is represented by inserting a circle or a dotted circle in the hexagon as shown in (C). The circle represents the six electrons which are delocalised between the six carbon atoms of the benzene ring.
The orbital overlapping gives us better picture about the structure of benzene. All the six carbon atoms in benzene are sp2 hybridized. Two sp2 hybrid orbitals of each carbon atom overlap with sp2 hybrid orbitals of adjacent carbon atoms to form six C-C sigma bonds which are in the hexagonal plane. The remaining sp2 hybrid orbital of each carbon atom overlaps with s orbital of a hydrogen atom to form six C-H sigma bonds. Each carbon atom is now left with one unhybridised p orbital perpendicular to the plane of the ring as shown below:
The unhybridised p orbital of carbon atoms are close enough to form a π bond by lateral overlap. There are two equal possibilities of forming three π bonds by overlap of p orbitals of C1 -C2, C3 – C4, C5 – C6 or C2 – C3, C4 – C5, C6 – C1 respectively as shown in the following figures.
Structures shown in Fig. 13.7(a) and (b) correspond to two Kekulé’s structure with localised π bonds. The internuclear distance between all the carbon atoms in the ring has been determined by the X-ray diffraction to be the same; there is equal probability for the p orbital of each carbon atom to overlap with the p orbitals of adjacent carbon atoms [Fig. 13.7 (c)]. This can be represented in the form of two doughtnuts (rings) of electron clouds [Fig. 13.7 (d)], one above and one below the plane of the hexagonal ring as shown below:
The six π electrons are thus delocalised and can move freely about the six carbon nuclei, instead of any two as shown in Fig. 13.6 (a) or (b). The delocalised π electron cloud is attracted more strongly by the nuclei of the carbon atoms than the electron cloud localised between two carbon atoms. Therefore, presence of delocalised π electrons in benzene makes it more stable than the hypothetical cyclohexatriene. X-Ray diffraction data reveals that benzene is a planar molecule. Had any one of the above structures of benzene (A or B) been correct, two types of C-C bond lengths were expected. However, X-ray data indicates that all the six C-C bond lengths are of the same order (139 pm) which is intermediate between C- C single bond (154 pm) and C-C double bond (133 pm). Thus the absence of pure double bond in benzene accounts for the reluctance of benzene to show addition reactions under normal conditions, thus explaining the unusual behaviour of benzene.
13.5.3 Aromaticity
Benzene was considered as parent ‘aromatic’ compound. Now, the name is applied to all the ring systems whether or not having benzene ring, possessing following characteristics.
(i) Planarity
(ii) Complete delocalisation of the π electrons in the ring
(iii) Presence of (4n + 2) π electrons in the ring where n is an integer (n = 0, 1, 2, . . .).
This is often referred to as Hückel Rule.
Some examples of aromatic compounds are given below:
13.5.4 Preparation of Benzene
Benzene is commercially isolated from coal tar.
However, it may be prepared in the laboratory by the following methods.
(i) Cyclic polymerisation of ethyne:
(Section 13.4.4)
(ii) Decarboxylation of aromatic acids: Sodium salt of benzoic acid on heating with sodalime gives benzene.
(iii) Reduction of phenol: Phenol is reduced to benzene by passing its vapours over heated zinc dust
13.5.5 Properties
Physical properties
Aromatic hydrocarbons are non- polar molecules and are usually colourless liquids or solids with a characteristic aroma. You are also familiar with naphthalene balls which are used in toilets and for preservation of clothes because of unique smell of the compound and the moth repellent property. Aromatic hydrocarbons are immiscible with water but are readily miscible with organic solvents. They burn with sooty flame.
Chemical properties
Arenes are characterised by electrophilic substitution reactions. However, under special conditions they can also undergo addition and oxidation reactions.
Electrophilic substitution reactions
The common electrophilic substitution reactions of arenes are nitration, halogenation, sulphonation, Friedel Craft’s alkylation and acylation reactions in which attacking reagent is an electrophile (E+)
(i) Nitration: A nitro group is introduced into benzene ring when benzene is heated with a mixture of concentrated nitric acid and concentrated sulphuric acid (nitrating mixture).
(ii) Halogenation: Arenes react with halogens in the presence of a Lewis acid like anhydrous FeCl3, FeBr3 or AlCl3 to yield haloarenes.
(iii) Sulphonation: The replacement of a hydrogen atom by a sulphonic acid group in a ring is called sulphonation. It is carried out by heating benzene with fuming sulphuric acid (oleum).
(iv) Friedel-Crafts alkylation reaction: When benzene is treated with an alkyl halide in the presence of anhydrous aluminium chloride, alkylbenene is formed.
Why do we get isopropyl benzene on treating benzene with 1-chloropropane instead of n-propyl benzene?
(v) Friedel-Crafts acylation reaction: The reaction of benzene with an acyl halide or acid anhydride in the presence of Lewis acids (AlCl3) yields acyl benzene.
If excess of electrophilic reagent is used, further substitution reaction may take place in which other hydrogen atoms of benzene ring may also be successively replaced by the electrophile. For example, benzene on treatment with excess of chlorine in the presence of anhydrous AlCl3 in dark yields hexachlorobenzene (C6Cl6)
Mechanism of electrophilic substitution reactions:
According to experimental evidences, SE (S = substitution; E = electrophilic) reactions are supposed to proceed via the following three steps:
(a) Generation of the eletrophile
(b) Formation of carbocation intermediate
(c) Removal of proton from the carbocation
intermediate
(a) Generation of electrophile E⊕: During chlorination, alkylation and acylation of benzene, anhydrous AlCl3, being a Lewis acid helps in generation of the elctrophile Cl⊕, R⊕, RC⊕O (acylium ion) respectively by combining with the attacking reagent.
In the case of nitration, the electrophile,nitronium ion,N+O2 is produced by transfer of a proton (from suphuric acid) to ntric acid in the following manner:
It is interesting to note that in the process of generation of nitronium ion, sulphuric acid serves as an acid and nitric acid as a base. Thus, it is a simple acid-base equilibrium.
(b) Formation of Carbocation(arenium ion):
Attack of electrophile results in the formation of σ-complex or arenium ion in which one of the carbon is sp3 hybridised.
The arenium ion gets stabilised by resonance:
Sigma complex or arenium ion loses its aromatic character because delocalisation of electrons stops at sp3 hybridised carbon.
(c) Removal of proton: To restore the aromatic character, σ -complex releases proton from sp3 hybridised carbon on attack by [AlCl4]– (in case of halogenation, alkylation and acylation) and [HSO4]– (in case of nitration).
Addition reactions
Under vigorous conditions, i.e., at high temperature and/ or pressure in the presence of nickel catalyst, hydrogenation of benzene gives cyclohexane.
Under ultra-violet light, three chlorine molecules add to benzene to produce benzene hexachloride, C6H6Cl6 which is also called gammaxane.
Combustion: When heated in air, benzene burns with sooty flame producing CO2 and H2O
C6H6+15/2O2->6CO2+3H2O (13.82)
chemical equation:
CxHy + (x + Y/4)O2->xCO2+y/2H2O
(13.83)
13.5.6 Directive influence of a functional
group in monosubstituted benzene When monosubstituted benzene is subjected to further substitution, three possible disubstituted products are not formed in equal amounts. Two types of behaviour are observed. Either ortho and para products or meta product is predominantly formed. It has also been observed that this behaviour depends on the nature of the substituent already present in the benzene ring and not on the nature of the entering group. This is known as directive influence of substituents. Reasons for ortho/ para or meta directive nature of groups are discussed below:
Ortho and para directing groups: The groups which direct the incoming group to ortho and para positions are called ortho and para directing groups. As an example, let us discuss the directive influence of phenolic (-OH) group. Phenol is resonance hybrid of following structures:
It is clear from the above resonating structures that the electron density is more on o- and p- positions. Hence, the substitution takes place mainly at these positions. However, it may be noted that -I effect of -OH group also operates due to which the electron density on ortho and para positions of the benzene ring is slightly reduced. But the overall electron density increases at these positions of the ring due to resonance. Therefore, -OH group activates the benzene ring for the attack by an electrophile. Other examples of activating groups are -NH2, -NHR, -HCOCH3, -OCH3,-CH3, -C2H5, etc.
In the case of aryl halides, halogens are moderately deactivating. Because of their strong -I effect, overall electron density on benzene ring decreases. It makes further substitution difficult. However, due to resonance the electron density on o- and p- positions is greater than that at the m-position. Hence, they are also o- and p- directing groups.
Meta directing group: The groups which direct the incoming group to meta position are called meta directing groups. Some examples of meta directing groups are -NO2, -CN, -CHO, -COR, -COOH, -COOR, -SO3H, etc.
Let us take the example of nitro group. Nitro group reduces the electron density in the benzene ring due to its strong-I effect. Nitrobenzene is a resonance hybrid of the following structures.
In this case, the overall electron density on benzene ring decreases making further substitution difficult, therefore these groups are also called ‘deactivating groups’. The electron density on o- and p – position is comparatively less than that at meta position. Hence, the electrophile attacks on comparatively electron rich meta position resulting in meta substitution.
13.6 CARCINOGENICITY AND TOXICITY
Benzene and polynuclear hydrocarbons containing more than two benzene rings fused together are toxic and said to possess cancer producing (carcinogenic) property. Such polynuclear hydrocarbons are formed on incomplete combustion of organic materials like tobacco, coal and petroleum. They enter into human body and undergo various biochemical reactions and finally damage DNA and cause cancer. Some of the carcinogenic hydrocarbons are given below (see box).
SUMMARY
Hydrocarbons are the compounds of carbon and hydrogen only. Hydrocarbons are mainly obtained from coal and petroleum, which are the major sources of energy. Petrochemicals are the prominent starting materials used for the manufacture of a large number of commercially important products. LPG (liquefied petroleum gas) and CNG (compressed natural gas), the main sources of energy for domestic fuels and the automobile industry, are obtained from petroleum. Hydrocarbons are classified as open chain saturated (alkanes) and unsaturated (alkenes and alkynes), cyclic (alicyclic) and aromatic, according to their structure.
The important reactions of alkanes are free radical substitution, combustion, oxidation and aromatization. Alkenes and alkynes undergo addition reactions, which are mainly electrophilic additions. Aromatic hydrocarbons, despite having unsaturation, undergo mainly electrophilic substitution reactions. These undergo addition reactions only under special conditions.
Alkanes show conformational isomerism due to free rotation along the C-C sigma bonds. Out of staggered and the eclipsed conformations of ethane, staggered conformation is more stable as hydrogen atoms are farthest apart. Alkenes exhibit geometrical (cis-trans) isomerism due to restricted rotation around the carbon-carbon double bond.
Benzene and benzenoid compounds show aromatic character. Aromaticity, the property of being aromatic is possessed by compounds having specific electronic structure characterised by Hückel (4n+2)π electron rule. The nature of groups or substituents attached to benzene ring is responsible for activation or deactivation of the benzene ring towards further electrophilic substitution and also for orientation of the incoming group. Some of the polynuclear hydrocarbons having fused benzene ring system have carcinogenic property.
EXERCISES
13.1 How do you account for the formation of ethane during chlorination of methane ?
13.2 Write IUPAC names of the following compounds :
13.3 For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated :
(a) C4H8 (one double bond) (b) C5H8 (one triple bond)
13.4 Write IUPAC names of the products obtained by the ozonolysis of the following compounds :
(i) Pent-2-ene (ii) 3,4-Dimethylhept-3-ene (iii) 2-Ethylbut-1-ene (iv) 1-Phenylbut-1-ene
13.5 An alkene ‘A’ on ozonolysis gives a mixture of ethanal and pentan-3-one. Write structure and IUPAC name of ‘A’.
13.6 An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.
13.7 Propanal and pentan-3-one are the ozonolysis products of an alkene? What is the structural formula of the alkene?
13.8 Write chemical equations for combustion reaction of the following
hydrocarbons:
(i) Butane (ii) Pentene
(iii) Hexyne (iv) Toluene
13.9 Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?
13.10 Why is benzene extra ordinarily stable though it contains three double bonds?
13.11 What are the necessary conditions for any system to be aromatic?
13.12 Explain why the following systems are not aromatic?
13.13 How will you convert benzene into
(i) p-nitrobromobenzene (ii) m- nitrochlorobenzene
(iii) p – nitrotoluene (iv) acetophenone?
13.14 In the alkane H3C -CH2– C(CH3)2 – CH2 -CH(CH3)2, identify 1°,2°,3° carbon atoms and give the number of H atoms bonded to each one of these.
13.15 What effect does branching of an alkane chain has on its boiling point?
13.16 Addition of HBr to propene yields 2-bromopropane, while in the presence of benzoyl peroxide, the same reaction yields 1-bromopropane. Explain and give mechanism.
13.17 Write down the products of ozonolysis of 1,2-dimethylbenzene (o-xylene). How does the result support Kekulé structure for benzene?
13.18 Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Also give reason for this behaviour.
13.19 Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?
13.20 How would you convert the following compounds into benzene?
(i) Ethyne (ii) Ethene (iii) Hexane
13.21 Write structures of all the alkenes which on hydrogenation give 2-methylbutane.
13.22 Arrange the following set of compounds in order of their decreasing relative reactivity with an electrophile, E+
(a) Chlorobenzene, 2,4-dinitrochlorobenzene, p-nitrochlorobenzene
(b) Toluene, p-H3C -C6H4 – NO2, p-O2N-C6H4 – NO2.
13.23 Out of benzene, m-dinitrobenzene and toluene which will undergo nitration most easily and why?
13.24 Suggest the name of a Lewis acid other than anhydrous aluminium chloride which can be used during ethylation of benzene.
13.25 Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example.
Answer to Some Selected Problems
13.1 Due to the side reaction in termination step by the combination of two free radicals.
13.2 (a) 2-Methyl-but-2-ene (b) Pent-1-ene-3-yne
(c) Buta-1, 3-diene (d) 4-Phenylbut-1-ene
(e) 2-Methylphenol (f) 5-(2-Methylpropyl)-decane
(g) 4-Ethyldeca –1,5,8- triene
13.3 (a) (i) CH2 = CH – CH2 – CH3 But-1-ene
(ii) CH2 – CH2 = CH – CH3 But-2-ene
(b) (i) HC ≡ C – CH2 – CH2 – CH3 Pent-1-yne
(ii) CH3 – C ≡ C – CH2 – CH3 Pent-2-yne
13.4 (i) Ethanal and propanal (ii) Butan-2-one and pentan-2-one
(iii) Methanal and pentan-3-one (iv) Propanal and benzaldehyde
13.5 3-Ethylpent-2-ene
13.6 But-2-ene
13.7 4-Ethylhex-3-ene
The cis form will have higher boiling point due to more polar nature leading to stronger intermolecular dipoledipole interaction, thus requiring more heat energy to separate them.
13.10 Due to resonance
13.11 Planar, conjugated ring system with delocalisation of (4n+2) π electrons, where, n is an integer
13.12 Lack of delocalisation of (4n +2) π electrons in the cyclic system.
13.13 (i)
(ii)
(iii)
13.14
15 H attached to 1° carbons
4 H attached to 2° carbons
1 H attached to 3° carbons
13.15 More the branching in alkane, lower will be the boiling point.
13.16 Refer to addition reaction of HBr to unsymmetrical alkenes in the text.
13.17
All the three products cannot be obtained by any one of the Kekulé’s structures. This shows that benzene is a resonance hybrid of the two resonating structures.
13.18 H – C ≡ C – H > C6H6 > C6H14. Due to maximum s orbital character in enthyne (50 per cent) as compared to 33 per cent in benzene and 25 per cent in n-hexane.
13.19 Due to the presence of 6 π electrons, benzene behaves as a rich source of electrons thus being easily attacked by reagents deficient in electrons.
13.20
13.21
13.22 (a) Chlorobenzene>p-nitrochlorobenzene> 2,4 – dinitrochlorobenzene (b) Toluene > p-CH3-C6H4-NO2 > p-O2N–C6H4–NO2
13.23 Toleune undergoes nitration most easily due to electron releasing nature of the methyl group.
13.24 FeCl3
13.25 Due to the formation of side products. For example, by starting with 1-bromopropane and 1-bromobutane, hexane and octane are the side products besides heptane.
I. Multiple Choice Questions (Type-I)
1. Arrange the following in decreasing order of their boiling points.
(A) n–butane (B) 2–methylbutane
(C) n-pentane (D) 2,2–dimethylpropane
(i) A > B > C > D
(ii) B > C > D > A
(iii) D > C > B > A
(iv) C > B > D > A
2. Arrange the halogens F2 , Cl2 , Br2 , I2 , in order of their increasing reactivity
with alkanes.
(i) I2 < Br2 < Cl2 < F2
(ii) Br2 < Cl2 < F2 < I2
(iii) F2 < Cl2 < Br2 < I2
(iv) Br2 < I2 < Cl2 < F2
3. The increasing order of reduction of alkyl halides with zinc and dilute HCl is
(i) R–Cl < R–I < R–Br
ii) R–Cl < R–Br < R–I
(iii) R–I < R–Br < R–Cl
(iv) R–Br < R–I < R–Cl
4. The correct IUPAC name of the following alkane is
(i) 3,6 – Diethyl – 2 – methyloctane
(ii) 5 – Isopropyl – 3 – ethyloctane
(iii) 3 – Ethyl – 5 – isopropyloctane
(iv) 3 – Isopropyl – 6 – ethyloctane
5. The addition of HBr to 1-butene gives a mixture of products A, B and C
The mixture consists of
(i) A and B as major and C as minor products
(ii) B as major, A and C as minor products
(iii) B as minor, A and C as major products
(iv) A and B as minor and C as major products
6. Which of the following will not show geometrical isomerism?
7. Arrange the following hydrogen halides in order of their decreasing reactivity with propene.
(i) HCl > HBr > HI
(ii) HBr > HI > HCl
(iii) HI > HBr > HCl
(iv) HCl > HI > HBr
8. Arrange the following carbanions in order of their decreasing stability.
(A) H3C – C ≡ C– (B) H – C ≡ C– (C)
(i) A > B > C
(ii) B > A > C
(iii) C > B > A
(iv) C > A > B
9. Arrange the following alkyl halides in decreasing order of the rate of β– elimination reaction with alcoholic KOH.
(B) CH3—CH2—Br (C) CH3—CH2—CH2—Br
(i) A > B > C
(ii) C > B > A
(iii) B > C > A
(iv) A > C > B
10. Which of the following reactions of methane is incomplete combustion:
(iii) CH4 + O2 → C(s) + 2H2O (l)
(iv) CH4 + 2O2 → CO2 (g) + 2H2O (l)
II. Multiple Choice Questions (Type-II)
In the following questions two or more options may be correct.
11. Some oxidation reactions of methane are given below. Which of them is/are controlled oxidation reactions?
(i) CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l)
(ii) CH4 (g) + O2 (g) → C (s) + 2H2O (l)
12. Which of the following alkenes on ozonolysis give a mixture of ketones only?
13. Which are the correct IUPAC names of the following compound?
(i) 5– Butyl – 4– isopropyldecane
(ii) 5– Ethyl – 4– propyldecane
(iii) 5– sec-Butyl – 4– iso-propyldecane
(iv) 4–(1-methylethyl)– 5 – (1-methylpropyl)-decane
14. Which are the correct IUPAC names of the following compound?
(i) 5 – (2′, 2′–Dimethylpropyl)-decane
(ii) 4 – Butyl – 2,2– dimethylnonane
(iii) 2,2– Dimethyl – 4– pentyloctane
(iv) 5 – neo-Pentyldecane
15. For an electrophilic substitution reaction, the presence of a halogen atom in the benzene ring _______.
(i) deactivates the ring by inductive effect
(ii) deactivates the ring by resonance
(iii) increases the charge density at ortho and para position relative to meta position by resonance
(iv) directs the incoming electrophile to meta position by increasing the charge density relative to ortho and para position.
16. In an electrophilic substitution reaction of nitrobenzene, the presence of nitro group ________.
(i) deactivates the ring by inductive effect.
(ii) activates the ring by inductive effect.
(iii) decreases the charge density at ortho and para position of the ring relative to meta position by resonance.
(iv) increases the charge density at meta position relative to the ortho and para positions of the ring by resonance.
17. Which of the following are correct?
(i) CH3—O— CH2⊕ is more stable than CH3— CH2⊕
(ii) (CH3)2CH⊕ is less stable than CH3—CH2— CH2⊕
(iii) CH2 = CH— CH2⊕ is more stable than CH3—CH2— CH2⊕
(iv) CH2 = CH⊕ is more stable than CH3— CH2⊕
18. Four structures are given in options (i) to (iv). Examine them and select the aromatic structures.
19. The molecules having dipole moment are __________.
(i) 2,2-Dimethylpropane
(ii) trans-Pent-2-ene
(iii) cis-Hex-3-ene
(iv) 2, 2, 3, 3 – Tetramethylbutane.
III. Short Answer Type
20. Why do alkenes prefer to undergo electrophilic addition reaction while arenes prefer electrophilic substitution reactions? Explain.
21. Alkynes on reduction with sodium in liquid ammonia form trans alkenes. Will the butene thus formed on reduction of 2-butyne show the geometrical isomerism?
22. Rotation around carbon-carbon single bond of ethane is not completely free. Justify the statement.
23. Draw Newman and Sawhorse projections for the eclipsed and staggered conformations of ethane. Which of these conformations is more stable and why?
24. The intermediate carbocation formed in the reactions of HI, HBr and HCl with propene is the same and the bond energy of HCl, HBr and HI is 430.5 kJ mol–1, 363.7 kJ mol–1 and 296.8 kJ mol–1 respectively. What will be the order of reactivity of these halogen acids?
25. What will be the product obtained as a result of the following reaction and why?
26. How will you convert benzene into (i) p – nitrobromobenzene (ii) m – nitrobromobenzene
27. Arrange the following set of compounds in the order of their decreasing relative reactivity with an electrophile.Give reason.
28. Despite their – I effect, halogens are o- and p-directing in haloarenes. Explain.
29. Why does presence of a nitro group make the benzene ring less reactive in comparison to the unsubstituted benzene ring. Explain.
30. Suggest a route for the preparation of nitrobenzene starting from acetylene?
31. Predict the major product (s) of the following reactions and explain their formation.
32. Nucleophiles and electrophiles are reaction intermediates having electron rich and electron deficient centres respectively. Hence, they tend to attack electron deficient and electron rich centres respectively. Classify the following species as electrophiles and nucleophiles.
(i) H3CO–
(v) (H3C)3C+ (vi) Br– (vii) H3COH (viii) R–NH–R
33. The relative reactivity of 1°, 2°, 3° hydrogen’s towards chlorination is 1 : 3.8 : 5. Calculate the percentages of all monochlorinated products obtained from 2-methylbutane.
34. Write the structures and names of products obtained in the reactions of sodium with a mixture of 1-iodo-2-methylpropane and 2-iodopropane.
35. Write hydrocarbon radicals that can be formed as intermediates during monochlorination of 2-methylpropane? Which of them is more stable? Give reasons.
36. An alkane C8H18 is obtained as the only product on subjecting a primary alkyl halide to Wurtz reaction. On monobromination this alkane yields a single isomer of a tertiary bromide. Write the structure of alkane and the tertiary bromide.
37. The ring systems having following characteristics are aromatic.
(i) Planar ring containing conjugated π bonds.
(ii) Complete delocalisation of the π−electrons in ring system i.e. each atom in the ring has unhybridised p-orbital, and
(iii) Presence of (4n+2) π−electrons in the ring where n is an integer (n = 0, 1, 2,………..) [Huckel rule]. Using this information classify the following compounds as aromatic/nonaromatic.
38. Which of the following compounds are aromatic according to Huckel’s rule?
39. Suggest a route to prepare ethyl hydrogensulphate (CH3–CH2–OSO2—OH) starting from ethanol (C2H5OH).
IV. Matching Type
40. Match the reagent from Column I which on reaction with CH3—CH=CH2 gives some product given in Column II as per the codes given below :
| Column I | Column II | ||
| (i) | O3/Zn + H2O | (a) | Acetic acid and CO2 |
| (ii) | KMnO4/H+ | (b) | Propan-1-ol |
| (iii) | KMnO4/OH– | (c) | Propan-2-ol |
| (iv) | H2O/H+ | (d) | Acetaldehyde and formaldehyde |
| (v) | B2H6/NaOH and H2O2 | (e) | Propane-1,2-diol |
41. Match the hydrocarbons in Column I with the boiling points given in Column II.
| Column I | Column II | ||
| (i) | n–Pentane | (a) | 282.5 K |
| (ii) | iso-Pentane | (b) | 309 K |
| (iii) | neo-Pentane | (c) | 301 K |
42. Match the following reactants in Column I with the corresponding reaction products in Column II.
43. Match the reactions given in Column I with the reaction types in Column II.
V. Assertion and Reason Type
In the following questions a statement of assertion (A) followed by a statement of reason (R) is given. Choose the correct option out of the choices given below each question.
44. Assertion (A) : The compound cyclooctane has the following structural formula : It is cyclic and has conjugated 8π-electron system but it is not an aromatic compound.
Reason (R) : (4n + 2) π electrons rule does not hold good and ring is not planar.
(i) Both A and R are correct and R is the correct explanation of A.
(ii) Both A and R are correct but R is not the correct explanation of A.
(iii) Both A and R are not correct.
(iv) A is not correct but R is correct.
45. Assertion (A) : Toluene on Friedal Crafts methylation gives o– and p–xylene.
Reason (R) : CH3-group bonded to benzene ring increases electron density at o– and p– position.
(i) Both A and R are correct and R is the correct explanation of A.
(ii) Both A and R are correct but R is not the correct explanation of A.
(iii) Both A and R are not correct.
(iv) A is not correct but R is correct.
46. Assertion (A) : Nitration of benzene with nitric acid requires the use of concentrated sulphuric acid.
Reason (R) : The mixture of concentrated sulphuric acid and concentrated nitric acid produces the electrophile, NO2+ .
(i) Both A and R are correct and R is the correct explanation of A.
(ii) Both A and R are correct but R is not the correct explanation of A.
(iii) Both A and R are not correct.
(iv) A is not correct but R is correct.
47. Assertion (A) : Among isomeric pentanes, 2, 2-dimethylpentane has highest boiling point.
Reason (R) : Branching does not affect the boiling point.
(i) Both A and R are correct and R is the correct explanation of A.
(ii) Both A and R are correct but R is not the correct explanation of A.
(iii) Both A and R are not correct.
(iv) A is not correct but R is correct.
VI. Long Answer Type
48. An alkyl halide C5H11Br (A) reacts with ethanolic KOH to give an alkene ‘B’, which reacts with Br2 to give a compound ‘C’, which on dehydrobromination gives an alkyne ‘D’. On treatment with sodium metal in liquid ammonia one mole of ‘D’ gives one mole of the sodium salt of ‘D’ and half a mole of hydrogen gas. Complete hydrogenation of ‘D’ yields a straight chain alkane. Identify A,B, C and D. Give the reactions invovled.
49. 896 mL vapour of a hydrocarbon ‘A’ having carbon 87.80% and hydrogen 12.19% weighs 3.28g at STP. Hydrogenation of ‘A’ gives 2-methylpentane. Also ‘A’ on hydration in the presence of H2SO4 and HgSO4 gives a ketone ‘B’ having molecular formula C6H12O. The ketone ‘B’ gives a positive iodoform test. Find the structure of ‘A’ and give the reactions involved.
50. An unsaturated hydrocarbon ‘A’ adds two molecules of H2 and on reductive ozonolysis gives butane-1,4-dial, ethanal and propanone. Give the structure of ‘A’, write its IUPAC name and explain the reactions involved.
51. In the presence of peroxide addition of HBr to propene takes place according to anti Markovnikov’s rule but peroxide effect is not seen in the case of HCl and HI. Explain.
ANSWERS
I. Multiple Choice Questions (Type-I)
1. (iv) 2. (i) 3. (ii) 4. (i) 5. (i) 6. (iv) 7. (iii) 8. (ii) 9. (iv) 10. (iii)
II. Multiple Choice Questions (Type-II)
11. (iii), (iv) 12. (iii), (iv) 13. (iii), (iv) 14. (i), (iv) 15. (i), (iii) 16. (i), (iii) 17. (i), (iii) 18. (i), (iii) 19. (ii), (iii)
III. Short Answer Type
20. Both alkenes and arenes are electron-rich. Therefore undergo electrophilic reactions. Olefins undergo addition reactions because addition of a reagent to an olefin gives a more stable product as sp2 hybridisation changes to sp3 hybridisation. Addition to the double bond of an arene would give a product with less or no resonance stability hence addition is difficult arenes. On the other hand in substitution reaction resonance stabilisation is retained therefore, arenes undergo substitution reaction.
21. 2-Butene is capable of showing geometrical isomerism.
22. The rotation about C—C bond is restricted because of repulsion between electron cloud of C—H bonds on either carbon atoms.
24. Bond dissociation energy is least for HI and maximum for HCl therefore, order of reactivity will be HI > HBr > HCl.
25. Propyl chloride forms less stable carbocation with anhydrous AlCl3 which rearranges to a more stable carbocation and gives isopropylbenzene as the product of the reaction.
27. The +R effect of —OCH3 > —Cl and —NO2 has a – R effect. Relative reactivity of the substituted benzene rings is as follows :
C6H5—OCH3 > C6H5—Cl > C6H5–NO2
28. Halogens attached to benzene rings exert –I and +R effect. +R effect dominates –I effect and increases the electron density at ortho and para positions of the benzene ring with respect to halogens.
33. 2-Methyl butane is . Possible compounds are A, B and C given below :
Relative amounts of A, B and C compounds = number of hydrogen × relative reactivity
A (1°) B (2°) C (3°)
Relative amount 9×1= 9 2×3.8 = 7.6 1×5=5
Total Amount of monohaloginated compounds = 9 + 7.6 + 5 = 21.6
Percentage of A = 9 x100/21.6 = 41.7%
Percentage of B = 7 .6 x 100/21.6 = 35.2%
Percentage of C = 5 x 100 /21.6 = 23.1%
35.
Radical I is tertiary where as radical II is primary. Radical I is more stable due to hyperconjugation.
36.
37. A = Planar ring, all atoms of the ring sp2 hybridised, has six delocalised π electrons, follows Huckel rule. It is aromatic.
B = Has six π electrons, but the delocalisation stops at sp3 hybridised CH2- carbon. Hence, not aromatic.
C = Six delocalised π-electrons (4 π electrons + 2 unshared electrons on negatively charged carbon) in a planar ring, follows Huckel’s rule. It is aromatic.
D = Has only four delocalised π-electrons. It is non aromatic.
E = Six delocalised π-electrons follows Huckel’s rule. π electrons are in sp2 hybridised orbitals, conjugation all over the ring because of positively charged carbon. The ring is planar hence is aromatic.
F = Follows Huckel’s rule, has 2 π electrons i.e. (4n+2) π-electrons where (n=0), delocalised π-electrons. It is aromatic.
G = 8π electrons, does not follow Huckel’s rule i.e., (4n+2) π-electrons rule. It is not aromatic.
38. A = Has 8π electrons, does not follow Huckel rule. Orbitals of one carbon atom are not in conjugation. It is not aromatic.
B = Has 6π delocalised electrons. Hence, is aromatic.
C = Has 6π electrons in conjugation but not in the ring. Non aromatic.
D = 10π electrons in planar rings, aromatic.
E = Out of 8π electrons it has delocalised 6π electrons in one six membered planar ring, which follows Huckel’s rule due to which it will be aromatic.
F = 14 π electrons are in conjugation and are present in a ring. Huckel’s rule is being followed. Compound will be aromatic if ring is planar.
IV. Matching Type
40. (i) → (d) (ii) → (a) (iii) → (e) (iv) → (c) (v) → (b)
41. (i) → (b) (ii) → (c) (iii) → (a)
42. (i) → (d) (ii) → (c) (iii) → (b) (iv) → (a)
43. (i) → (d) (ii) → (a) (iii) → (b) (iv) → (c)
V. Assertion and Reason Type
44. (i) 45. (i) 46. (i) 47. (iii)
VI. Long Answer Type
48.
The reactions suggest that (D) is a terminal alkyne. This means triple bond is at the end of the chain. It could be either (I) or (II).
CH3— CH2—CH2—CH2 ≡ CH
I
Since alkyne ‘D’ on hydrogenation yields straight chain alkane, therefore structure I is the structure of alkyne (D).
Hence, the structures of A, B and C are as follows :
(A) CH3—CH2—CH2—CH2—CH2Br
(B) CH3—CH2—CH2—CHCH2
(C) CH3—CH2—CH2—CH (Br)—CH2Br
49. Step I
896 mL vapour of CxHy (A) weighs 3.28 g
22700 mL vapour of CxHy (A) weighs 3.28 × 22700/896 g mol–1 = 83.1 g mol–1
Step II
| Element | (%) | Atomic mass | Relative ratio | Relative no. of atoms | Simplest ratio |
| C | 87.8 | 12 | 7.31 | 1 | 3 |
| H | 12.19 | 1 | 12.19 | 1.66 | 4.98≈5 |
Empirical formula of ‘A’ C3H5
Empirical formula mass = 35 + 5 = 41 u
n = Molecular mass/Empirical formula mass = 83.1/41 = 2 .02 ≈ 2
⇒ Molecular mass is double of the empirical formula mass.
∴ Molecular Formula is C6H10
Step III
Structure of 2-methylpentane is
Hence, the molecule has a five carbon chain with a methyl group at the second carbon atom.
‘A’ adds a molecule of H2O in the presence of Hg2+ and H+, it should be an alkyne. Two possible structures for ‘A’ are :
Since the ketone (B) gives a positive iodoform test, it should contain a —COCH3 group. Hence the structure of ketone is as follows :
Therefore structure of alkyne is II.
50. Two molecules of hydrogen add on ‘A’ this shows that ‘A’ is either an alkadiene or an alkyne.
On reductive ozonolysis ‘A’ gives three fragments, one of which is dialdehyde. Hence, the molecule has broken down at two sites. Therefore, ‘A’ has two double bonds. It gives the following three fragments :
OHC—CH2—CH2—CHO, CH3CHO and CH3—CO—CH3
Hence, its structure as deduced from the three fragments must be
Reactions
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see http://skmclasses.weebly.com/jobs.html
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search for videos in http://www.skmclasses.kinja.com
you will get most videos. I say most because I do not upload all videos that I make. I have many more videos which are not in the net.
http://skmclasses.wordpress.com/accolades-and-appreciations-received-from-students-and-parents/
http://skmclasses4olympiads.wordpress.com/
http://skmclasses.weebly.com/appreciations.html
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The following Videos are available for you ( As of Now ). These explain tricky Physics and Mathematics Numericals.
Eventually I will try to give Videos for full course here for you.
These covers PU ( Pre University courses, school / college ) courses, IIT JEE, AIEEE ( All India Engineering Entrance Examination ) , CET ( Combined Engineering Test ), AIPMT ( All India Pre Medical Test ), ISc ( Intermediate Science / Indian School Certificate Exam ), CBSE ( Central Board Secondary Exam ), Roorkey Joint Entrance Test Questions ( Discontinued since 2002 ), APhO ( Asian Physics Olympiad ), IPhO ( International Physics Olympiad ), IMO ( International Mathematics Olympiad ) , NSEP ( National Standard Exam in Physics ), RMO ( Regional Math Olympiad , India ), INMO ( Indian National Maths Olympiad ), Irodov Solutions, Prof. H C Verma ( Concepts of Physics ) Solutions etc.
( You can see the history of Indian Participation in various Olympiads at ->
https://zookeepersblog.wordpress.com/indian-participation-in-ipho-icho-ibo-and-astronomy-olympiad/ )
[ In each of these videos there is at-least 1 or more errors. Please tell me about those ]
search for videos in http://www.skmclasses.kinja.com
You should get to see all the Uploaded videos. Though we have many more study videos.
Thanks and Regards
Zookeeper ;-D Subhashish Chattopadhyay
[ I suggest you see the videos starting with 1- first then starting with 2- ….. in that sequence. ]
[ Tell your friends about this link if you liked the videos ]
In case of doubts or suggestions, Please send me email at mokshya@gmail.com
search for videos in http://www.skmclasses.kinja.com
Answers to -> Frequently Asked Questions ( FAQ ) [ commonly asked intelligent Questions 🙂 ]
1 ) How do I prepare for IIT ?
Ans : – See the videos made by me ( search for videos in http://www.skmclasses.kinja.com
Though we have many more which have not been uploaded ). While watching the videos, take notes and try to solve the problems yourself by pausing the video. Tell me if any calculation is wrong. See the videos with 1- first then 2- and so on. Write to IAPT Kothrud, Pune office to buy ( 150 Rs approx ) the book with previous papers of NSEP ( National Standard Exam in Physics – The 1st level ), INPhO ( Indian National Physics Olympiad – 2nd level ). Prepare with these and see how much you are scoring. You can guess your ALL INDIA rank easily from NSEP, and INPhO rank. Since 1998 the IIT JEE toppers have been mostly representing India in IPhO.
2 ) Which codec and Player do I use to see the videos ?
Ans : – You can use GOM Player, or VLC Player. You have to have good speakers with filters or good earphones with filters. We have checked mostly it is OK with these. ( If you are depending only on your embedded speakers of computer /screen / keyboard then there may be extra distortions. As these speakers are often not of good Quality. Also install latest KL Codecs ) In any case reduce the volume see the board, imagine sitting in the last bench and solving the problems of your own. See if your solution differs anywhere with the scribbles on the board.
3 ) Why are you giving these ( high Quality ) lecture for free ?
Ans : Well there are lot of good things free in this world. Linux, My-SQL, Open-Office ….. Go to sourceforge and get thousands of high quality software free along with source code. Yes all officially free …. Why do you think Richard Stallman, Zimmerman, ….. etc are considered Guru philosophers ? In Punjab and Gurudwaras worldwide there are so many Langars where you get better food than Restaurants. ….. why ? Why do you have Dharmasalas and subsidized rest rooms near hospitals / Famous Temples / various places ? in Iftar party anyone can eat for free …. why ?
I am teaching since 1989 I have observed most students can do much better if they have the self motivation to solve and practice. Cheap books are available in second hand bookstalls, where you get thousands of Numericals to solve ….. but most students will like to blow their time going and coming for tuition, travel time …. TV for hours and hours watching cricket / Tennis games, playing computer games …. My free lectures are not going to make much difference in spending of unnecessary money for coaching ….. I know very well , how much people enjoy …. ! spending unnecessarily !!
–
Do you know that there are NO poor / needy students in Bangalore.
–
Sometime back I had tried to teach for IIT JEE FREE. Discussed with a few NGOs and social service guys. Arranged rooms but got only 1 student. We had informed many people in many ways to inform students …. We did not get students who are ready to learn for free. So I am sure these lectures are NOT FREE. If anyone learns from these, s/he changes and that’s the gain / benefit. This change ( due to learning ) is very costly …. Most do not want to learn ………..
search for videos in http://www.skmclasses.kinja.com
You will get most videos. I say most because I do not upload all videos that I make. I have many more videos which are not in the net.
🙂
4 ) How can I get all your lectures ?
Ans : – Apart from my lectures there are approx 700 GB of PCM ( Phy, Chem, Math ) lectures. It takes approx 3 years of continuous download from scattered sources. I have ( 20,000 )Thousands of these. You can take ALL of them from me in an external 1 TB hard disk, instead of spending so much money and time again for downloading. These cover ( by Various Professors ) everything of Chemistry, Physics, Maths… Lot of this is from outside India … as foreigners have much wider heart than Indians ( as most of GNU / open source software have been developed by Non-Indians ). I observed the gaps in these videos, and thus I am solving IIT, APhO, Roorkey, IPhO Numericals. Videos made by me along with these videos gives a complete preparation.
Send me a mail at mokshya@gmail.com to contact me.
search for videos in http://www.skmclasses.kinja.com
You will get most videos. I say most because I do not upload all videos that I make. I have many more videos which are not in the net.
🙂
5 ) How do you get benefited out of this ?
Ans :- If anyone learns we all will have better people in this world. I will have better “ YOU “.
🙂
6 ) Why do you call yourself a Zookeeper ?
Ans :- This is very nicely explained at https://zookeepersblog.wordpress.com/z00keeper-why-do-i-call-myself-a-zoookeeper/
🙂
7 ) Where do you stay ?
Ans :- Presently I am in Bangalore.
🙂
8 ) If I need videos in a few topics can you make them for me ?
Ans :- We actively answers doubts at doubtpoint.
see http://skmclasses.weebly.com/doubtpoint.html
In case you appreciate our time and efforts involved in answering complicated Questions, then get Quality answers at doubtpoint.
🙂
9 ) Why did you write an article saying there are No Poor students ?
Ans :- There are lots of NGOs and others working for rural / poor children education at lower classes. While very less effort is on for std 9 till 12. Also see the answer in question number ( 3 ) above. In more than 2 decades of teaching I never met a Poor child who was seriously interested in ( higher ) studies. As I have a mind / thinking of a ” Physicist “, I go by ” Experimental Observation “.
It is not about what is being said about poor in media / TV etc, or ” what it should be ” ( ? ) …. It is about what I see happening. Also to add ( confuse ? you more )…. You must be knowing that in several states over many years now girl students have better ( by marks as well as by pass percentage ) result in std 10 / Board Exams….. well but NEVER a girl student came FIRST in IIT JEE … why ? [ The best rank by a Girl student is mostly in 2 digits, very rarely in single digit ] ????? So ????
🙂
10 ) How much do I have to study to make it to IIT ?
Ans :- My experience of Teaching for IIT JEE since 1989, tells me, Total 200 hours per subject ( PCM ) is sufficient. If you see my Maths and Physics videos, each subject is more than 200 hours. So if someone sees all the videos diligently, takes notes and remembers, …… Done.
🙂
11 ) What is EAMCET ?
Ans :- Engineering Agriculture and Medicine Common Entrance Test is conducted by JNT University Hyderabad on behalf of APSCHE. This examination is the gateway for entry into various professional courses offered in Government/Private Colleges in Andhra Pradesh.
12 ) In your videos are you covering other Exams apart from IIT ?
Ans : – Yes. See many videos made by solving problems of MPPET, Rajasthan / J&K CET, UPSEAT ( UPES Engineering Aptitude Test ), MHCET, BCECE ( Bihar Combined Entrance Competitive Examination Board ), WB JEE etc
🙂
13 ) What is SCRA ?
Ans : – Special Class Railway Apprentice (SCRA) exam is conducted by Union Public Service Commission (UPSC) board, for about 10 seats.That translates into an astonishing ratio of 1 selection per 10,000 applicants. The SCRA scheme was started in 1927 by the British, to select a handful of most intelligent Indians to assist them in their Railway Operations, after training at their Railway’s largest workshop, i.e. Jamalpur Workshop, and for one year in United Kingdom. The selected candidates were required to appear in the Mechanical Engineering Degree Examination held by Engineering Council (London).
Thanks for your time. To become my friend in google+ ( search me as mokshya@gmail.com and send friend request )
Read http://edge.org/responses/what-scientific-concept-would-improve-everybodys-cognitive-toolkit
🙂
The following video is a must see for full CO2 cycle, plates of Earth, Geological activities, stability of weather
http://www.youtube.com/watch?v=oIuoNtRBG4w
🙂
Article in Nature says CO2 increase is good for the trees
http://thegwpf.org/science-news/6086-co2-is-greening-the-planet-savannahs-soon-to-be-covered-by-forests.html
🙂
http://climaterealists.com/index.php?id=9752
BBC documentary Crescent and Cross shows the 1000 years of fight between Christians and Muslims. Millions have been killed in the name of Religion. To decided whose GOD is better, and which GOD to follow. The fight continues.
–
Summary of Women
🙂
The Virus of Faith
http://www.youtube.com/watch?v=scarHc8RA0g
🙂
The God delusion
http://www.youtube.com/watch?v=LVr9bJ8Sctk
🙂
cassiopeia facts about evolution
–
Intermediate Fossil records shown and explained nicely Fossils, Genes, and Embryos http://www.youtube.com/watch?v=fdpMrE7BdHQ
The Rise Of Narcissism In Women
http://www.youtube.com/watch?v=wZHKCbHGlS0
🙂
13 type of women whom you should never court
http://timesofindia.indiatimes.com/life-style/relationships/man-woman/13-Women-you-should-never-court/articleshow/14637014.cms
🙂
Media teaching Misandry in India
http://www.youtube.com/watch?v=-M2txSbOPIo
Summary of problems with women
http://problemwithwomentoday.blogspot.in/2009/12/problem-with-women-today-what-in-hell.html
🙂
Eyeopener men ? women only exists
http://www.youtube.com/watch?v=6ZAuqkqxk9A
🙂
Each of you is an Activist in some way or other. You are trying to propagate those thoughts, ideas that you feel concerned / excited about.
–
Did you analyze your effectiveness ?
http://www.youtube.com/watch?v=61qn7S9NCOs
Culturomics can help you
😀
see how biased women are. Experimental proof. Women are happy when they see another woman is beating a man ( see how women misbehave with men )
🙂
http://www.youtube.com/watch?v=LlFAd4YdQks
–
see detailed statistics at
http://www.youtube.com/watch?v=5lHmCN3MBMI
An eye opener in Misandry
http://www.youtube.com/watch?v=YiTaDS_X6CU
My sincere advice would be to be EXTREMELY careful ( and preferably away ) of girls. As girls age; statistically certain behavior in them has been observed. Most Male can NOT manage those behaviors… Domestic violence, divorce etc are rising very fast. Almost in all cases boys / males are HUGE loosers. Be extremely choosy ( and think from several angles ) before even talking to a girl.
🙂
https://zookeepersblog.wordpress.com/save-the-male/
🙂
How women manipulate men
http://www.angryharry.com/esWomenManipulateMen.htm
Gender Biased Laws in India
https://zookeepersblog.wordpress.com/biased-laws/
🙂
Violence against Men
http://www.youtube.com/watch?v=MLS2E-rRynE
🙂
Only men are victimised
http://www.youtube.com/watch?v=4JA4EPRbWhQ
Men are BETTER than women
http://www.menarebetterthanwomen.com/
🙂
see
🙂
Male Psychology
Women are more violent than men
http://www.independent.co.uk/news/uk/home-news/women-are-more-violent-says-study-622388.html
🙂
In the year 2010, 168 men ended their lives everyday ( on average ). More husbands committed suicide than wives.
🙂
http://www.rediff.com/news/report/ncrb-stats-show-more-married-men-committing-suicide/20111028.htm
It is EXTREMELY unfortunate that media projects men as fools, women as superiors, Husbands as servants, and replaceable morons. In ad after ad worldwide from so many companies, similar msg to disintegrate the world is being bombarded. It is highly unacceptable misandry
🙂
It is NOT at all funny that media shows violence against MEN. Some advertisers are trying to create a new ” Socially acceptable culture ” of slapping Men ( by modern city women ). We ( all men ) take objection to these advertisements.
We oppose this Misandry bad culture. Please share to increase awareness against Men bashing
🙂
http://www.youtube.com/watch?v=D8ecN2rh0uU
Think what are you doing … why are you doing ?
http://www.youtube.com/watch?v=qp0HIF3SfI4
Every Man must know this …
http://www.youtube.com/watch?v=cIFmQHJEG1M
🙂
Manginas, White Knights, & Other Chivalrous Dogs
http://www.youtube.com/watch?v=oXQDtBT70B8
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distribution distribution energies molecules particular temperature IITJEE skmclasses.weebly.com graph bond enthalpy enthalpy change IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com breaking homolytic fission 1 mol bond molecules gaseous species carbanion organic ion IITJEE SKMClasses.weebly.com carbon atom hIITJEE skmclasses.weebly.com negative charge carbocation organic ion IITJEE SKMClasses.weebly.com carbon atom hIITJEE skmclasses.weebly.com positive charge catalyst substance IITJEE SKMClasses.weebly.com increases rate chemical reaction process cation positively charged ion cis trans isomerism special type isomerism IITJEE SKMClasses.weebly.com non hydrogen group skmclasses.weebly.com hydrogen atom C C=C double bond cis isomer ( Z isomer) IITJEE skmclasses.weebly.com H atoms on IITJEE SKMClasses.weebly.com carbon same side trans isomer E isomer H atoms carbon different bond compound substance formed IITJEE SKMClasses.weebly.com two IITJEE SKMClasses.weebly.com chemically bonded elements fixed ratio, usually chemical formula concentration amount solute mol IITJEE SKMClasses.weebly.com 1 dm 3 1000 cm solution coordinate bond shared pair electrons provided one bonding atoms called dative covalent bond covalent bond bond formed shared pair electrons cracking breaking long chained saturated hydrocarbonsIITJEE SKMClasses.weebly.com mixture shorter chained alkanesalkenes curly arrow symbol IITJEE SKMClasses.weebly.com reaction mechanisms IITJEE SKMClasses.weebly.com show movement electron Coaching ICWA Coaching CFA Coaching CFP Coaching CMAT Coaching School Tuitions CBSE School Tuitions Home Tuitions 9th STD Tuitions PUC Coaching 10th Std Tuitions College Tuitions Maths Tuitions Engineering Tuitions Accounts & Finance Tuitions MBA & BBA Coaching Microbiology & Biotech Tuitions Study Abroad GRE & SAT Coaching GMAT Coaching IELTS/TOEFL Coaching PTE Coaching proteins protonation pyridines pyrroles quinones quinolines radical reaction radicals rearrangement receptors reduction regioselectivity retro reaction rhodium ring closure ring contraction ring expansion ring opening ruthenium samarium scandium Schiff bases selenium self-assembly silicon sodium solid-phase synthesis solvent effects spectroscopy sphingolipids spiro compounds stereoselective synthesis stereoselectivity steric hindrance steroids Stille reaction substituent effects sulfates sulfonamides sulfones sulfoxides sulfur supported catalysis supramolecular tandem reaction tautomerism terpenoids thioacetals thiols tin titanium total synthesis transesterification transition metals transition states tungsten Umpolung vinylidene complexes vitamins Wacker reaction Wittig reaction ylides zeolites zinc BRST Quantization Effective field theories Field Theories Higher Dimensions Field Theories Lower Dimensions Large Extra Dimensions Lattice Quantum Field Theory Nonperturbative Effects Renormalization Group Renormalization Regularization skmclasses.weebly.com Renormalons Sigma Models Solitons Monopoles skmclasses.weebly.com Instantons Supersymmetric gauge theory Topological Field Theories 1/N Expansion Anyons Chern-Simons Theories Confinement Duality Gauge Field Theories Lattice Gauge Field Theories Scattering Amplitudes Spontaneous Symmetry Breaking Strong Coupling Expansion Topological States Matter Wilson ‘t Hooft skmclasses.weebly.comPolyakov loops Anomalies Field skmclasses.weebly.comString Theories BRST Symmetry Conformal skmclasses.weebly.com W Symmetry Discrete skmclasses.weebly.comFinite Symmetries Gauge Symmetry Global Symmetries Higher Spin Symmetry Space-Time Symmetries AdS-CFT Correspondence Black Holes String Theory Bosonic Strings Brane Dynamics Gauge Theories Conformal Field Models String Theory D-branes dS vacua string theory F-Theory Flux compactifications Gauge-gravity correspondence Holography skmclasses.weebly.comcondensed matter physics (AdS CMT) Holography skmclasses.weebly.comquark-gluon plasmas Intersecting branes models Long strings M(atrix) Theories M-Theory p-branes Penrose limit skmclasses.weebly.compp-wave background String Duality String Field Theory String theory skmclasses.weebly.comcosmic string Superstring Vacua Superstrings skmclasses.weebly.comHeterotic Strings Tachyon Condensation Topological Strings 2D Gravity Black Holes Classical Theories Gravity Higher Spin Gravity Lattice Models Gravity Models Quantum Gravity Spacetime Singularities Extended Supersymmetry Supergravity Models Superspaces Supersymmetric Effective Theories Supersymmetry skmclasses.weebly.com Duality Supersymmetry Breaking Differential skmclasses.weebly.comAlgebraic Geometry Integrable Hierarchies Non-Commutative Geometry Quantum Groups Statistical Methods Stochastic Processes Cosmology Theories beyond SM Solar skmclasses.weebly.comAtmospheric Neutrinos Thermal Field Theory Be Ansatz Boundary Quantum Field Theory Exact S-Matrix Quantum Dissipative Systems Random Systems B-Physics Beyond Standard Model Compactification skmclasses.weebly.com String Models CP violation Electromagnetic Processes skmclasses.weebly.com Properties GUT Heavy Quark Higgs Kaon LEP HERA skmclasses.weebly.com SLC Neutrino Physics Quark Masses skmclasses.weebly.comSM Parameters Rare Decays Standard Model Supersymmetric Standard Model Technicolor skmclasses.weebly.com Composite Models Chiral Lagrangians Deep Inelastic Scattering Higher Twist Effects Lattice QCD Parton Model Phase Diagram QCD Phenomenological Models QCD Quark-Gluon Plasma Resummation Sum Rules Aim Global Education Koramangala Computer Networking Training Cloud Computing Training JBOSS Training Juniper Certification Training L2 & L3 Protocol Training MCTS Training Engineering design Training CAD & CAM Training MATLAB Training PLC Training SCADA Training VLSI Design Multimedia & Design Training 2D Animation Training 3D Animation Training 4D Animation Training CorelDRAW Training VFX Training Web Technologies Training ASP.Net Training JQuery pair breaking formation covalent bond dative covalent shared pair electrons IITJEE SKMClasses.weebly.com hIITJEE skmclasses.weebly.com been provided one bonding atoms only IITJEE SKMClasses.weebly.com called coordinate bond dehydration elimination reaction IITJEE SKMClasses.weebly.com water removed saturated molecule IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com unsaturated molecule delocalised Electrons IITJEE SKMClasses.weebly.com shared IITJEE SKMClasses.weebly.com two atoms displacement reaction reaction IITJEE SKMClasses.weebly.com reactive element displaces less reactive element IITJEE SKMClasses.weebly.com aqueous solution latter’s ions displayed formula showing relative positioning atoms molecule skmclasses.weebly.com bonds IITJEE SKMClasses.weebly.com disproportionation oxidation skmclasses.weebly.com reduction element redox reaction dynamic equilibrium equilibrium IITJEE SKMClasses.weebly.com exists closed system IITJEE SKMClasses.weebly.com rate forward reaction equal IITJEE SKMClasses.weebly.com rate reverse reaction E/Z isomerism type stereoisomerism IITJEE SKMClasses.weebly.com different groups attached IITJEE SKMClasses.weebly.com carbon C=C double bond arranged differently space restricted rotation C=C bond electron configuration arrangement electrons IITJEE SKMClasses.weebly.com atom electronegativity measure attraction bonded atom skmclasses.weebly.com pair electrons covalent bond electron shielding repulsion IITJEE SKMClasses.weebly.com electrons different inner shells Shielding reduces net attractive force IITJEE SKMClasses.weebly.com positive nucleus outer shell electrons electrophile atom group atoms IITJEE SKMClasses.weebly.com attracted IITJEE SKMClasses.weebly.com electron rich centre atom IITJEE SKMClasses.weebly.com accepts pair electrons covalent bond electrophilic addition type addition reaction IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com electrophile attracted electron rich centre atom accepts pair electrons IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com new covalent bond elimination reaction removal molecule IITJEE SKMClasses.weebly.com saturated molecule IITJEE SKMClasses.weebly.com unsaturated molecule empirical formula simplest whole number ratio atoms IITJEE SKMClasses.weebly.com element present compound endothermic reaction reaction IITJEE SKMClasses.weebly.com enthalpy products greater enthalpy reactants resulting heat being taken surroundings enthalpy heat content IITJEE SKMClasses.weebly.com stored chemical system standard enthalpy change combustion enthalpy change IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com one mole substance reacts completely IITJEE SKMClasses.weebly.com oxygen under standard conditions reactants skmclasses.weebly.com products being IITJEE SKMClasses.weebly.com standard states (standard) enthalpy change formation enthalpy change IITJEE SKMClasses.weebly.com one mole compound formed IITJEE SKMClasses.weebly.com constituent elements IITJEE SKMClasses.weebly.com standard states under standard conditions (standard) enthalpy change reaction enthalpy change IITJEE SKMClasses.weebly.com accompanies reaction molar quantities expressed chemical equation under standard conditions reactants skmclasses.weebly.com products being IITJEE SKMClasses.weebly.com standard states enthalpy cycle diagram showing alternative routes IITJEE SKMClasses.weebly.com reactants products IITJEE SKMClasses.weebly.com allows indirect determination IITJEE SKMClasses.weebly.com enthalpy change IITJEE SKMClasses.weebly.com other known enthalpy changes using Hess’ law enthalpy profile diagram skmclasses.weebly.com reaction IITJEE SKMClasses.weebly.com compare enthalpy reactants IITJEE SKMClasses.weebly.com enthalpy products esterification reaction IITJEE SKMClasses.weebly.com alcohol IITJEE SKMClasses.weebly.com carboxylic acid IITJEE SKMClasses.weebly.com produce ester skmclasses.weebly.com water exothermic reaction IITJEE SKMClasses.weebly.com enthalpy products smaller enthalpy reactants, resulting heat loss IITJEE SKMClasses.weebly.com surroundings fractional distillation separation components liquid mixture skmclassesfractions IITJEE SKMClasses.weebly.com differ boiling point skmclasses.weebly.com hence chemical composition IITJEE SKMClasses.weebly.com distillation typically using fractionating column fragmentation process mass spectrometry IITJEE SKMClasses.weebly.com causes positive ion split skmclasses pieces one positive fragment ion functional group part organic molecule responsible skmclasses.weebly.com chemical reactions general formula simplest algebraic formula member homologous series. skmclasses.weebly.com example general formula alkanes giant covalent lattice dimensional structure atoms, bonded together strong covalent bonds giant ionic lattice three dimensional structure oppositely charged ions, bonded together strong ionic bonds giant metallic lattice three dimensional structure positive ions skmclasses.weebly.com delocalised electrons, bonded together strong metallic bonds greenhouse effect process IITJEE SKMClasses.weebly.com absorption subsequent emission infrared radiation atmospheric gases warms lower atmosphere planet’s surface group vertical column Periodic Table Elements group IITJEE SKMClasses.weebly.com similar chemical properties skmclasses.weebly.com atoms skmclasses.weebly.comnumber outer shell electrons Hess law reaction IITJEE SKMClasses.weebly.com one route skmclasses.weebly.com initial final conditions IITJEE SKMClasses.weebly.com skmclasses.weebly.com total enthalpy change skmclasses.weebly.com skmclasses.weebly.com route heterogeneous catalysis reaction IITJEE SKMClasses.weebly.com catalyst IITJEE skmclasses.weebly.com different physical state reactants; frequently, reactants IITJEE SKMClasses.weebly.com gases whilst catalyst solid heterolytic fission breaking covalent bond IITJEE SKMClasses.weebly.com both bonded electrons going IITJEE SKMClasses.weebly.com one atoms, forming cation (+ ion) skmclasses.weebly.com IITJEE SKMClasses.weebly.com anion ion homogeneous catalysis reaction catalyst skmclasses.weebly.com reactants physical state, IITJEE SKMClasses.weebly.com frequently aqueous gaseous state homologous series series organic compounds IITJEE SKMClasses.weebly.com skmclasses.weebly.com functional group, IITJEE SKMClasses.weebly.com successive member differing homolytic fission breaking covalent bond IITJEE SKMClasses.weebly.com one bonded electrons going IITJEE SKMClasses.weebly.com atom, forming two radicals hydrated Crystalline skmclasses.weebly.com containing water molecules hydrocarbon compound hydrogen skmclasses.weebly.com carbon hydrogen bond strong dipole attraction IITJEE SKMClasses.weebly.com electron deficient hydrogen atom (O H on different molecule hydrolysis reaction IITJEE SKMClasses.weebly.com water aqueous hydroxide ions IITJEE SKMClasses.weebly.com breaks chemical compound skmclasses two compounds initiation first step radical substitution IITJEE SKMClasses.weebly.com free radicals generated ultraviolet radiation intermolecular force attractive force IITJEE SKMClasses.weebly.com neighbouring molecules Intermolecular forces van der Waals’ forces induced dipole ces permanent dipole forces hydrogen bonds ion positively negatively charge atom covalently bonded group atoms molecular ion ionic bonding electrostatic attraction IITJEE SKMClasses.weebly.com oppositely charged ions first) ionisation energy IITJEE SKMClasses.weebly.com remove one electron IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com ion one mole gaseous 1+ ions IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com one mole gaseous 2+ ions second) ionisation energy IITJEE SKMClasses.weebly.com remove one electron IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com ion one mole gaseous 1+ ions IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com one mole gaseous 2+ ions successive ionisation measure energy IITJEE SKMClasses.weebly.com remove IITJEE SKMClasses.weebly.com electron Chemistry energy second ionisation energy energy IITJEE SKMClasses.weebly.com one electron IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com ion one mole gaseous 1+ ions IITJEE SKMClasses.weebly.com one mole gaseous 2+ ions isotopes Atoms skmclasses.weebly.com element IITJEE SKMClasses.weebly.com different numbers neutrons different masses le Chatelier’s principle system dynamic equilibrium subjected change position equilibrium will shift minimise change limiting reagent substance chemical reaction IITJEE SKMClasses.weebly.com runs out first lone pair outer shell pair electrons IITJEE SKMClasses.weebly.com involved chemical bonding mass nucleon number particles protons aneutrons) nucleus mechanism sequence steps showing path taken electrons reaction metallic bond electrostatic attraction IITJEE SKMClasses.weebly.com positive metal ions adelocalised electrons molar mass substance units molar mass IITJEE SKMClasses.weebly.com molar volume IITJEE SKMClasses.weebly.com mole gas. units molar volume IITJEE SKMClasses.weebly.com dm room temperature skmclasses.weebly.com pressure molar volume approximately 24.0 substance containing IITJEE skmclasses.weebly.com many particles thereIITJEE SKMClasses.weebly.com carbon atoms exactly 12 g carbon isotope molecular formula number atoms IITJEE SKMClasses.weebly.com element molecule molecular ion M positive ion formed mass spectrometry IITJEE SKMClasses.weebly.com molecule loses electron molecule small group atoms held together covalent bonds monomer small molecule IITJEE SKMClasses.weebly.com combines IITJEE SKMClasses.weebly.com monomers polymer nomenclature system naming compounds nucleophile atom group atoms attracted electron deficient centre atom donates pair electrons covalent bond nucleophilic substitution type substitution reaction IITJEE SKMClasses.weebly.com nucleophile attracted electron deficient centre atom, IITJEE SKMClasses.weebly.com donates pair electrons IITJEE SKMClasses.weebly.com new covalent bond oxidation Loss electrons IITJEE SKMClasses.weebly.com increase oxidation number oxidation number measure number electrons IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com atom uses bond IITJEE SKMClasses.weebly.com atoms another element. Oxidation numbers IITJEE SKMClasses.weebly.com derive d rules oxidising agent reagent IITJEE SKMClasses.weebly.com oxidises (takes electrons from) another species percentage yield period horizontal row elements Periodic Table Elements show trends properties across period periodicity regular periodic variation properties elements IITJEE SKMClasses.weebly.com atomic number position Periodic Table permanent dipole small charge difference across bond resulting IITJEE SKMClasses.weebly.com difference electronegativities bonded atoms permanent dipole dipole force attractive force IITJEE SKMClasses.weebly.com permanent dipoles neighbouring polar molecules pi bond (p bond reactive part double bond formed above skmclasses.weebly.com below plane bonded atoms sideways overlap p orbitalspolar covalent bond bond IITJEE SKMClasses.weebly.com permanent dipole polar molecule molecule IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com overall dipole skmclasses account dipoles across bonds polymer long molecular chain built monomer units precipitation reaction formation solid solution during chemical reaction Precipitates IITJEE SKMClasses.weebly.com formed IITJEE SKMClasses.weebly.com two aqueous solutions IITJEE SKMClasses.weebly.com mixed together principal quantum number n number representing relative overall energy orbital IITJEE SKMClasses.weebly.com increases distance nucleus sets orbitals IITJEE SKMClasses.weebly.com value IITJEE skmclasses.weebly.com electron shells energy levels propagation two repeated radical substitution IITJEE SKMClasses.weebly.com build up products chain reaction radical species unpaired electron rate reaction change concentration reactant product redox reaction reaction IITJEE SKMClasses.weebly.com reduction skmclasses.weebly.com oxidation take IITJEE SKMClasses.weebly.com reducing agent reagent IITJEE SKMClasses.weebly.com reduces (adds electron to) species reduction Gain electrons decrease oxidation number yield actual amount mol product theoretical amount mol product Chemistry reflux continual boiling skmclasses.weebly.com condensing reaction mixture ensure IITJEE SKMClasses.weebly.com reaction IITJEE SKMClasses.weebly.com without contents flask boiling dry relative atomic mass weighted mean mass atom element compared one twelfth mass IITJEE SKMClasses.weebly.com atom carbon relative formula mass weighted mean mass formula unit compared IITJEE SKMClasses.weebly.com one twelfth mass atom carbon relative isotopic mass mass atom isotope compared IITJEE SKMClasses.weebly.com one twelfth mass atom carbon relative molecular mass weighted mean mass molecule compared twelfth mass atom carbon 12 repeat unit specific arrangement atom s IITJEE SKMClasses.weebly.com occurs structure over over again. Repeat units IITJEE SKMClasses.weebly.com included brackets outside IITJEE SKMClasses.weebly.com symbol n Salt chemical compound formed IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com acid IITJEE SKMClasses.weebly.com H+ ion acid IITJEE skmclasses.weebly.com been replaced metal ion another positive ion such IITJEE skmclasses.weebly.com ammonium ion, NH saturated hydrocarbon IITJEE SKMClasses.weebly.com single bonds only shell group atomic orbitals IITJEE SKMClasses.weebly.com skmclasses.weebly.com principal quantum number known main energy level simple molecular lattice three dimensional structure molecules, bonded together weak intermolecular forces skeletal formula simplified organic formula, IITJEE SKMClasses.weebly.com hydrogen atoms removed alkyl chains, leaving carbon skeleton skmclasses.weebly.com associated functional groups species particle IITJEE SKMClasses.weebly.com part chemical reaction specific heat capacity, c energy IITJEE SKMClasses.weebly.com raise temperature 1 g substance 1 C spectator ions Ions present part chemical reaction standard conditions pressure 100 kPa 1 atmosphere stated temperature usually 298 K (25 °C), skmclasses.weebly.com concentration 1 mol dm reactions aqueous solutions standard enthalpies enthalpystandard solution solution known concentration Standard solutions normally IITJEE SKMClasses.weebly.com titrations IITJEE SKMClasses.weebly.com determine unknown information another substance Chemistry standard state physical state substance under standard conditions 100 kPa 1 atmosphere) skmclasses.weebly.com 298 K 25 C stereoisomers Compounds skmclasses.weebly.com structural formula IITJEE SKMClasses.weebly.com different arrangement atoms space stoichiometry molar relationship IITJEE SKMClasses.weebly.com relative quantities substances part reaction stratosphere second layer Earth’s atmosphere, containing ‘ozone layer’, about 10 km IITJEE SKMClasses.weebly.com 50 km above Earth’s surface structural formula formula showing minimal detail skmclasses.weebly.com arrangement atoms molecule structural isomers Molecules IITJEE SKMClasses.weebly.com skmclasses.weebly.com molecular formula different structural arrangements atoms subshell group skmclasses.weebly.com type atomic orbitals s, p, d f within shell substitution reaction reaction IITJEE SKMClasses.weebly.com atom group atoms replaced different atom group atoms termination step end radical substitution IITJEE SKMClasses.weebly.com two radicals combine IITJEE SKMClasses.weebly.com molecule thermal decomposition breaking chemical substance IITJEE SKMClasses.weebly.com heat skmclasses least two chemical substances troposphere lowest layer Earth’s atmosphere extending Earth’s surface about 7 km (above poles) about 20 km above tropics unsaturated hydrocarbon hydrocarbon containing carbon carbon multiple bonds van der Waals’ forces Very weak attractive forces IITJEE SKMClasses.weebly.com induced dipoles neighbouring molecules volatility ease IITJEE SKMClasses.weebly.com liquid turns skmclasses gas Volatility increases boiling point decreases water crystallisation Water molecules IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com essential part crystalline structure absolute zero – theoretical condition concerning system at zero Kelvin IITJEE SKMClasses.weebly.com system does IITJEE SKMClasses.weebly.com emit absorb energy (all atoms rest accuracy – how close value IITJEE SKMClasses.weebly.com actual true value IITJEE SKMClasses.weebly.com see precision acid compound that, IITJEE SKMClasses.weebly.com dissolved water pH less 7.0 compound IITJEE SKMClasses.weebly.com donates hydrogen ion acid anhydride compound IITJEE SKMClasses.weebly.com two acyl groups boundIITJEE SKMClasses.weebly.com single oxygen atom acid dissociation constant – IITJEE SKMClasses.weebly.com equilibrium constant skmclasses.weebly.com dissociation weak acid actinides – fifteen chemical elements IITJEE SKMClasses.weebly.com actinium (89) skmclasses.weebly.com lawrencium (103 activated complex – structure IITJEE SKMClasses.weebly.com forms because collisionIITJEE SKMClasses.weebly.com molecules new bondsvIITJEE SKMClasses.weebly.com formed activation energy – minimum energy IITJEE SKMClasses.weebly.com must be inputIITJEE SKMClasses.weebly.com chemical system activity series actual yield addition reaction – within organic chemistry, IITJEE SKMClasses.weebly.com two IITJEE SKMClasses.weebly.com molecules combineIITJEE SKMClasses.weebly.com IITJEE SKMClasses.weebly.com larger aeration mixing air skmclasses liquid solid alkali metals metals Group 1 on periodic table alkaline earth metals – metals Group 2 on periodic table allomer substance IITJEE SKMClasses.weebly.com hIITJEE skmclasses.weebly.comdifferent composition another skmclasses.weebly.comcrystalline structure allotropy elements IITJEE SKMClasses.weebly.com different structures skmclasses.weebly.com therefore different forms IITJEE skmclasses.weebly.com Carbon diamonds, graphite, skmclasses.weebly.com fullerene anion negatively charge ions anode – positive side dry cell battery cell aromaticity – chemical property conjugated rings IITJEE SKMClasses.weebly.com results unusual stability. See IITJEE SKMClasses.weebly.com benzene atom – chemical element IITJEE SKMClasses.weebly.com smallest form, skmclasses.weebly.com made up neutrons skmclasses.weebly.comprotons within nucleus skmclasses.weebly.comelectrons circling nucleus atomic mass unit atomic number number representing IITJEE SKMClasses.weebly.com element IITJEE SKMClasses.weebly.com corresponds IITJEE SKMClasses.weebly.com number protons within nucleus atomic orbital region IITJEE SKMClasses.weebly.com electron atom may be found atomic radius average atomic mass Avogadro’s law Avogadro’s number number particles mole substance ( 6.02×10^23 ) barometer deviceIITJEE SKMClasses.weebly.comIITJEE SKMClasses.weebly.com measure pressure atmosphere base substance IITJEE SKMClasses.weebly.com accepts proton skmclasses.weebly.com high pH; common example sodium hydroxide (NaOH biochemistry chemistry organisms boiling phase transition liquid vaporizing boiling point temperature IITJEE SKMClasses.weebly.com substance startsIITJEE SKMClasses.weebly.com boil boiling-point elevation process IITJEE SKMClasses.weebly.com boiling point elevated adding substance bond – attraction skmclasses.weebly.com repulsion IITJEE SKMClasses.weebly.com atoms skmclasses.weebly.com molecules IITJEE SKMClasses.weebly.com cornerstone Boyle’s law Brønsted-Lowrey acid chemical species IITJEE SKMClasses.weebly.com donates proton Brønsted–Lowry acid–base reaction Brønsted-Lowrey base – chemical species IITJEE SKMClasses.weebly.com accepts proton buffered solution – IITJEE SKMClasses.weebly.com aqueous solution consisting weak acid skmclasses.weebly.comits conjugate base weak base skmclasses.weebly.comits conjugate acid IITJEE SKMClasses.weebly.com resists changes pH IITJEE SKMClasses.weebly.com strong acids basesIITJEE SKMClasses.weebly.com added burette (IITJEE SKMClasses.weebly.com buret glasswareIITJEE SKMClasses.weebly.com dispense specific amounts liquid IITJEE SKMClasses.weebly.com precision necessary titration skmclasses.weebly.com resource dependent reactions example combustion catalyst chemical compoundIITJEE SKMClasses.weebly.comIITJEE SKMClasses.weebly.com change rate IITJEE SKMClasses.weebly.com speed up slow down reaction,IITJEE SKMClasses.weebly.com regenerated at end reaction cation – positively charged ion centrifuge equipmentIITJEE SKMClasses.weebly.comIITJEE SKMClasses.weebly.com separate substances based on density rotating tubes around centred axis cell potential force galvanic cell IITJEE SKMClasses.weebly.com pulls electron through reducing agentIITJEE SKMClasses.weebly.com oxidizing agent chemical Law certain rules IITJEE SKMClasses.weebly.com pertain IITJEE SKMClasses.weebly.com laws nature skmclasses.weebly.comchemistry – examples chemical reaction – change one IITJEE SKMClasses.weebly.com substances skmclassesanother multiple substances colloid mixture evenly dispersed substances such IITJEE skmclasses.weebly.comm milks combustion IITJEE SKMClasses.weebly.com exothermic reaction IITJEE SKMClasses.weebly.com oxidant skmclasses.weebly.comfuel IITJEE SKMClasses.weebly.com heat skmclasses.weebly.comoften light compound – substance IITJEE SKMClasses.weebly.com made up two IITJEE SKMClasses.weebly.com chemically bonded elements condensation phase changeIITJEE SKMClasses.weebly.com gasIITJEE SKMClasses.weebly.com liquid conductor material IITJEE SKMClasses.weebly.com allows electric flow IITJEE SKMClasses.weebly.com freely covalent bond – chemical bond IITJEE SKMClasses.weebly.com involves sharing electrons crystal solid IITJEE SKMClasses.weebly.com packed IITJEE SKMClasses.weebly.com ions, molecules atoms IITJEE SKMClasses.weebly.com orderly fashion cuvette glasswareIITJEE SKMClasses.weebly.com spectroscopic experiments. usually made plastic glass quartz skmclasses.weebly.comshould be IITJEE possible deionization removal ions, skmclasses.weebly.com water’s case mineral ions such IITJEE skmclasses.weebly.comsodium, iron skmclasses.weebly.comcalcium deliquescence substances IITJEE SKMClasses.weebly.com absorb water IITJEE SKMClasses.weebly.com atmosphereIITJEE SKMClasses.weebly.com liquid solutions deposition – settling particles within solution mixture dipole electric magnetic separation charge dipole moment – polarity polar covalent bond dissolution solvation – spread ions monosacharide double bond sharing two pairs electradodes Microcentrifuge Eppendorf tube IITJEE SKMClasses.weebly.com Coomassie Blue solution earth metal – see alkaline earth metal electrolyte solution IITJEE SKMClasses.weebly.com conducts certain amount current skmclasses.weebly.com split categorically IITJEE skmclasses.weebly.com weak skmclasses.weebly.comstrong electrolytes electrochemical cell using chemical reaction’s current electromotive force made electromagnetic radiation type wave IITJEE SKMClasses.weebly.com through vacuums IITJEE skmclasses.weebly.comwell IITJEE skmclasses.weebly.commaterial skmclasses.weebly.comclassified IITJEE skmclasses.weebly.com self-propagating wave electromagnetism fields IITJEE SKMClasses.weebly.com electric charge skmclasses.weebly.comelectric properties IITJEE SKMClasses.weebly.com change way IITJEE SKMClasses.weebly.com particles move skmclasses.weebly.com interact electromotive force device IITJEE SKMClasses.weebly.com gains energy IITJEE skmclasses.weebly.comelectric charges pass through electron – subatomic particle IITJEE SKMClasses.weebly.com net charge IITJEE SKMClasses.weebly.com negative electron shells – IITJEE SKMClasses.weebly.com orbital around atom’s nucleus fixed number electrons usually two eight electric charge measured property (coulombs) IITJEE SKMClasses.weebly.com determine electromagnetic interaction element IITJEE SKMClasses.weebly.com atom IITJEE SKMClasses.weebly.com defined IITJEE SKMClasses.weebly.com atomic number energy – system’s abilityIITJEE SKMClasses.weebly.com do work enthalpy – measure total energy thermodynamic system (usually symbolized IITJEE skmclasses.weebly.comH entropy – amount energy IITJEE SKMClasses.weebly.com available skmclasses.weebly.com work closed thermodynamic system usually symbolized IITJEE skmclasses.weebly.com S enzyme – protein IITJEE SKMClasses.weebly.com speeds up catalyses reaction Empirical Formula – IITJEE SKMClasses.weebly.com called simplest formula gives simplest whole -number ratio atoms IITJEE SKMClasses.weebly.com element present compound eppendorf tube – generalized skmclasses.weebly.comtrademarked term skmclasses.weebly.com type tube; see microcentrifuge freezing – phase transitionIITJEE SKMClasses.weebly.com liquidIITJEE SKMClasses.weebly.com solid Faraday constant unit electrical charge widelyIITJEE SKMClasses.weebly.com electrochemistry skmclasses.weebly.comequalIITJEE SKMClasses.weebly.com ~ 96,500 coulombs represents 1 mol electrons, Avogadro number electrons: 6.022 × 1023 electrons. 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33, Sector IV HSR Layout, Bangalore hydrolysis hydrosilylation hydrostannation hyperconjugation imides imines indium indoles induction inhibitors insertion iodine ionic liquids iridium iron isomerization The Brigade International School , Brigade Millenium JP Nagar Brigade Millenium, JP Nagar Bangalore ketones kinetic resolution lactams lactones lanthanides Lewis acids ligands lipids lithiation lithium macrocycles magnesium manganese Mannich bases medicinal chemistry metalation metallacycles metallocenes metathesis Michael addition Mitsunobu reaction molecular recognition molybdenum multicomponent reaction nanostructures natural products neighboring-group effects nickel nitriles nitrogen nucleobases nucleophiles nucleophilic addition nucleophilic National Centre For Excellence 154/1, “Victorian Enclave”, 5th Main, Malleshpalya, Bangalore aromatic substitution nucleosides nucleotides olefination oligomerization oligonucleotides oligosaccharides organometallic reagents osmium oxidation oxygen oxygenations ozonolysis palladacycles palladium peptides pericyclic reaction peroxides phase-transfer catalysis phenols pheromones phosphates phosphorus phosphorylation Adugodi Aga Abbas Ali Road Agaram Agrahara Dasara Halli Agrahara Dasarahalli Airport Exit Road Airport Main Road Airport Road Akkipet Ali Askar Road Alur Venkatarao Road Amarjyothi Layout Amruth Nagar Amrutha Halli Ananda Nagar Anandrao Circle Anche Palya Ane Palya Anekal Anjana Nagar Anubhava Nagar APMC Yard Arabic College Arakere Arcot Sreenivasachar Street Ashok Nagar Ashwath Nagar Attibele Attiguppe Austin Town Avala Halli Avenue Road B. Narayanapura Babusahib Palya Bagalagunte Bagalur Balaji Nagar Balepet Banashankari Banashankari 1st Stage Banashankari 2nd Stage Banashankari 3rd Stage Banaswadi Banaswadi Ring Road Bangalore G.P.O Bannerghatta Bannerghatta Road Bapuji Nagar Basappa Circle Basava Nagar Basavanagudi Basaveshwara Nagar Basaveshwara Nagar 2nd Stage Basaveshwara Nagar 3rd Block Basaveshwara Nagar 3rd Stage Basaveshwara Road Bazaar Street Begur BEL Road Bellandur Bellandur Outer Ring Road Bellary Road BEML Layout Benagana Halli Bendre Nagar Benson Town Bharati Nagar Bhattara Halli Bhoopasandra Bhuvaneshwari Nagar Bidadi Bileka Halli Bilekahalli Binny Mill Road Bismillah Nagar Bommana Halli Bommanahalli Kendriya Vidyalaya Malleswaram 18th Cross Malleswaram Bangalore Bommasandra Bommasandra Industrial Area Brigade Road Brindavan Nagar Brookefield Brunton Road BTM 1st Stage BTM 2nd Stage Bull Temple Road Palace Orchards/Sadashivnagar area located north city centre IITJEE SKMClasses.weebly.com property prices higher brackets possibly IITJEE SKMClasses.weebly.com up-market residential area in Bangalore M.G. 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