NCERT Solutions for Class 12 Chemistry: Chapter-wise Solutions

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Jasmine Grover

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NCERT Solutions for Class 12 Chemistry covers all the questions on chemical equations, reactions, and mechanisms for all chapters of the CBSE Class 12 Board exam. In this article, Class 12 Chemistry NCERT Solutions for Class 12 Chemistry are given as per the latest Class 12 CBSE Syllabus.

Class 12 Chemistry NCERT Solutions

Specific chapters that have been omitted as per the latest Class 12 CBSE syllabus have been mentioned as “omitted”. The chapter-wise NCERT Solutions for Class 12 Chemistry are as follows:

Important Topics in Class 12 Chemistry

The important topics covered in the Class 12 Chemistry NCERT textbook are:

Chapter 1 The Solid State [Omitted]

Weightage in Board Exam - About 5 marks

Generally, around 2 to 3 questions of 1 to 3 marks are asked from Solid State on solid packing and Non-Stoichiometric Defects.

Additional Resources:

Class 12 Chemistry Chapter 1 – Important Topics
Impurity Defects Amorphous and Crystalline Solids Crystal Lattices and Unit Cells
Packing Efficiency Imperfections in Solids Magnetic Properties
Covalent bonds Frenkel Defect Schottky Defect
Conductors Insulators Classification Of Crystalline Solids
Density of Unit Cell Metallic Bonds Bravais Lattices
Tetrahedral and Octahedral voids Avogadro constant Point defects

NCERT Solutions for Class 12 Chemistry contains numerical related to Metal Excess Defect and Electron Vacancy. The NCERT Solutions include detailed explanations for each step to help the students in their preparation.

Chapter 2 Solutions

Weightage in Board Exam - About 10 marks along with the Solid State

Questions related to types of solutions, Raoult’s law, and colligative properties are generally asked in the examination. 

Additional Resources:

Solutions – Important Topics
Types of Solutions Solubility Abnormal Molar Masses
Ideal and Non-ideal Solutions Saturated solution Mole fraction
Depression in freezing point Azeotropic Distillation Factors Affecting Solubility
Mass Percentage (w/w) Mass Percent Formula Solubility formula
Percent by weight formula Osmotic pressure equation Solubility curve
Molecular weight using colligative properties Ideal Solution Mole Fraction
Retention factor formula Solvent Examples Melting and Boiling Point
Supersaturated Solution Sodium acetate Sodium hypochlorite formula

Chapter 3 Electrochemistry

Weightage in Board Exam - 3 to 5 marks questions

NCERT Solutions for Class 12 Chemistry Chapter 3 includes numerical questions covering topics of electrochemical cells and standard cell potentials of galvanic cells that are frequently asked in the examination.

Additional Resources:

Electrochemistry – Important Topics
Electrochemistry Nernst Equation Batteries
Fuel Cells Corrosion Electrolytic Cells and Electrolysis
Anode and cathode Electrolytic Cell Daniell Cell
Concentration Cell Reduction Potential Difference Between Cell and Battery
Nonelectrolyte Standard Hydrogen Electrode Types of Battery
Cell Potential Standard Electrode Potential Conduction of Electricity in Liquids
Corrosion Uses of Electroplating Electrodes

Chapter 4 Chemical Kinetics

Weightage in Board Exam - about 13 marks.

NCERT Solutions for Class 12 Chemistry includes questions related to collision theory, molecularity of a reaction, and finding the rate constant of a reaction.

Additional Resources:

Chemical Kinetics – Important Topics
Chemical Kinetics Rate of a Chemical Reaction Integrated Rate Equations
Collision Theory of Chemical Reactions Surface Chemistry Activation Energy
Electrophoresis First Order Reactions Order of Reaction
Pseudo First Order Reaction Second Order Reactions Arrhenius Equation
Zero Order Reaction Elementary Reactions Rate Determining Step

Chapter 5 Surface Chemistry [Omitted]

Weightage in Board Exam - approximately 5 marks.

Questions based on heterogeneous activity, Adsorption, factors affecting adsorption, and Catalysis are covered in the NCERT Solutions for Class 12 Chemistry. 

Additional Resources:

Surface Chemistry – Important Topics
Colloids Classification of Colloids Emulsions
Properties Of Colloids Colloidal Solutions Haber Process
Structure of Zeolites Preparation of colloidal solutions Adsorption absorption differences
Activity selectivity of catalyst Coagulation of colloidal solutions Dialysis of lyophilic and lyophobic sol
Flocculation Latex chemical compound Acid base catalysis
Heterogeneous reaction Methyl Acetate Iron Oxide

Chapter 6 General Principles and Processes of Isolation of Elements [Omitted]

Weightage in Board Exam - About 2 to 3 questions of 1 to 3 marks

NCERT Solutions for Class 12 Chemistry includes questions related to the separation method for Concentration of Ore, Column Chromatography, Zone Refining, and the difference between minerals and ores.

Additional Resources:

General Principles and Processes of Isolation of Elements – Important Topics
Calcination and Roasting Process Of Metallurgy Reverberatory Furnace
Iron extraction blast furnace metallurgy Aluminum Leaching Process
Extraction of crude metal from concentrated ore Ellingham Diagram Thermite welding
Zinc extraction metallurgy Copper oxide Cyanide
Column Chromatography Principle Gold Platinum

Chapter 7 p Block Elements [Omitted]

Weightage in Board Exam - About 10 marks

NCERT Solutions for Class 12 Chemistry Chapter 7 includes questions related to trends in the chemical reactivity of group 15 elements and the placement of p-block elements in the periodic table.

Additional Resources:

P-Block Elements – Important Topics
Dinitrogen Ammonia Oxides of Nitrogen
Nitric Acid Phosphine Oxoacids of Phosphorus
Ozone Dioxygen Group 16 Elements
Sulphuric Acid Oxoacids of Sulphur Sulphur Dioxide
Interhalogen Compounds Organometallic compounds Brown Ring Test
Transition Metals Inner Transition Metals Allotropes of Carbon

Chapter 8 d and f Block Elements

Weightage in Board Exam – 5-6 marks.

Questions related to oxidation states, ionization enthalpy, and transition elements are generally asked from this chapter.

Additional Resources:

D and F Block Elements
Chlorine Hydrogen Chloride Group 18 Elements
Lanthanoids contraction Actinoids Actinium
Ammonium acetate Einsteinium Holmium
Dysprosium Raney nickel Promethium
Praseodymium Neodymium Lawrencium

Chapter 9 Coordination Compounds

Weightage in Board Exam – about 3 marks

NCERT Solutions for Class 12 Chemistry includes important questions in the chapter covering Werner’s theory, coordination number, and bonding in metal carbonyls

Additional Resources:

Coordination Compounds – Important Topics
Coordination Compounds Werner’s Theory of Coordination Compounds Nomenclature of Coordination Compounds
Isomerism in Coordination Compounds Lewis acids Ligands
Wilkinsons catalyst Chelate Intermetallic Compound
Cis Trans Isomerism Binary Compounds Cobalt
Diastereomers Geochemistry Potassium Cyanide

Chapter 10 Haloalkanes and Haloarenes

Weightage in Board Exam – about 3 to 5 marks

NCERT Solutions for Class 12 Chemistry includes questions related to equations for preparation of 1-butanol and 1-chlorobutane, substitution reactions, and Grignard reagents are generally asked in the examinations from Haloalkanes and Haloarenes.

Additional Resources:

Haloalkanes and Haloarenes – Important Topics
Classification of Haloalkanes and Haloarenes Nomenclature Finkelstein reaction
Optical isomerism Enantiomers Ester Hydrolysis
Wurtz Reaction sn1 Reaction sn2 Reaction
Nucleophilic Substitution Elimination Reactions Swarts Reaction

Chapter 11 Alcohols, Phenols, and Ethers

Weightage in Board Exam – about 5 marks 

NCERT Solutions of Class 12 Chemistry includes questions related to the classification of alcohol, Kolbe’s reaction, and the resonance structure of the compounds that are frequently asked in the examination.

Additional Resources:

Alcohols, Phenols, and Ethers – Important Topics
Reimer Tiemann reaction Friedel Crafts reaction Dehydration Of Alcohols
Ortho Effect Wittig Reaction Williamson Synthesis
Electrophilic Aromatic Substitution Halogenation Ether Preparation
Difference Between Aldehydes and Ketones Hydroboration Preparation of Alcohol

Chapter 12 Aldehydes, Ketones and Carboxylic Acids

Weightage in Board Exam – about 7 to 8 marks 

The questions related to the named reactions, preparation of compounds, and their reactions are generally asked from  Aldehydes, Ketones and Carboxylic Acids.

Additional Resources:

 Aldehydes, Ketones and Carboxylic Acids – Important Topics
Uses of Carboxylic Acids Etard reaction Aldol condensation
Cannizzaro reaction Carboxylic Acids Iodoform Test
Carbonyl Compounds Fehling Test Nucleophilic Addition Reaction
Transesterification Gatterman – Koch Reaction Clemmesen Reduction Reaction

Chapter 13 Amines

Weightage in Board Exam – 13 marks

NCERT Solutions for Class 12 Chemistry cover the concepts of classification of amines, reactions, and Structure of Amines

Additional Resources:

Amines – Important Topics
Method of Preparation of Diazonium Salts Sandmeyer reaction Gabriel Phthalimide Synthesis
Hoffmann Bromamide Degradation Reaction Gatterman reaction Carbylamine Reaction
Diazotisation Coupling Reaction Hinsberg’s Reagent
Phthalimide Sulphonation Electrophilic Substitution

Chapter 14 Biomolecules

Weightage in Board Exam – about 3 to 5 marks.

NCERT Solutions for Class 12 Chemistry includes questions related to monosaccharides, reducing sugars, and glycosidic linkage are often asked in the examination.

Additional Resources:

Biomolecules – Important Topics
Carbohydrates Proteins Enzymes
Vitamins Nucleic Acids Hormones
Difference Between Glucose and Fructose Maltose Complex Carbohydrates
Difference Between Fats and Oils Sucrose Cellulose

NCERT Solutions for Chemistry contains an in-depth explanation for all the questions of logical reasoning. They cover step-by-step processes to solve numerical questions. Class 12 Chemistry NCERT Solutions covers concise and to-the-point answers to all theoretical questions.

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CBSE CLASS XII Related Questions

Concentrated nitric acid used in laboratory work is \(68\%\) nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of the solution is \(1.504\, \text{g mL}^{–1}?\)


      Three electrolytic cells A,B,C containing solutions of ZnSO4, AgNO3 and CuSO4, respectively are connected in series. A steady current of 1.5 amperes was passed through them until 1.45 g of silver deposited at the cathode of cell B. How long did the current flow? What mass of copper and zinc were deposited?

          How much electricity is required in coulomb for the oxidation of 
          (i) 1 mol of H2O to O2
          (ii) 1 mol of FeO to Fe2O3.

              An antifreeze solution is prepared from 222.6 g of ethylene glycol C2H6O2 and 200 g of water. Calculate the molality of the solution. If the density of the solution is 1.072 g mL–1, then what shall be the molarity of the solution?

                  A solution is obtained by mixing 300 g of \(25\%\) solution and 400 g of \(40\%\) solution by mass. Calculate the mass percentage of the resulting solution.


                      A solution of Ni(NO3)2 is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode?

                          CBSE CLASS XII Previous Year Papers


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