CBSE Class 12 Chemistry Syllabus 2025-26 PDF Download; Check Marking Scheme

Overview

Details

Board Name:

Central Board of Secondary Examination

Class:

12

Subject:

Chemistry

Subject Code: 

043

Total Marks:

100 

Theory Marks:

70

Project Marks: 

30

Exam Duration:

3 Hours

Total Sections:

2 Sections (Theory & Internal)

Unit 1: Solutions

Types of solutions, expression of concentration of solutions of solids in liquids, solubility of gases in liquids, solid solutions, Raoult’s law, colligative properties - relative lowering of vapor pressure, elevation of boiling point, depression of freezing point, osmotic pressure, determination of molecular masses using colligative properties, abnormal molecular mass, Van't Hoff factor

Unit 2: Electrochemistry

Redox reactions, EMF of a cell, standard electrode potential, Nernst equation and its application to chemical cells, Relation between Gibbs energy change and EMF of a cell, conductance in electrolytic solutions, specific and molar conductivity, variations of conductivity with concentration, Kohlrausch's Law, electrolysis and law of electrolysis (elementary idea), dry cell-electrolytic cells and Galvanic cells, lead accumulator, fuel cells, corrosion.

Unit 3: Chemical Kinetics

Rate of a reaction (Average and instantaneous), factors affecting rate of reaction: concentration, temperature, catalyst; order and molecularity of a reaction, rate law and specific rate constant, integrated rate equations and half-life (only for zero and first order 10 reactions), concept of collision theory (elementary idea, no mathematical treatment), activation energy, Arrhenius equation.

Unit 4: d and f Block Elements

General introduction, electronic configuration, occurrence and characteristics of transition metals, general trends in properties of the first row transition metals – metallic character, ionization enthalpy, oxidation states, ionic radii, colour, catalytic property, magnetic properties, interstitial compounds, alloy formation, preparation and properties of K2Cr2O7 and KMnO4. Lanthanides - Electronic configuration, oxidation states, chemical reactivity and lanthanide contraction and its consequences. 

Actinides - Electronic configuration, oxidation states and comparison with lanthanides

Unit 5: Coordination Compounds

Coordination compounds - Introduction, ligands, coordination number, colour, magnetic properties and shapes, IUPAC nomenclature of mononuclear coordination compounds. Bonding, Werner's theory, VBT, and CFT; structure and stereoisomerism, importance of coordination compounds (in qualitative analysis, extraction of metals and biological system). 

Unit 6: Haloalkanes and Haloarenes 

Haloalkanes: Nomenclature, nature of C–X bond, physical and chemical properties, optical rotation mechanism of substitution reactions. 

Haloarenes: Nature of C–X bond, substitution reactions (Directive influence of halogen in monosubstituted compounds only). Uses and environmental effects of - dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons, DDT.

Unit 7: Alcohols, Phenols and Ethers

Alcohols: Nomenclature, methods of preparation, physical and chemical properties (of primary alcohols only), identification of primary, secondary and tertiary alcohols, mechanism of dehydration, uses with special reference to methanol and ethanol. 

Phenols: Nomenclature, methods of preparation, physical and chemical properties, acidic nature of phenol, electrophilic substitution reactions, uses of phenols. 

Ethers: Nomenclature, methods of preparation, physical and chemical properties, uses

Unit 8: Aldehydes, Ketones and Carboxylic Acids 

Aldehydes and Ketones: Nomenclature, nature of carbonyl group, methods of preparation, physical and chemical properties, mechanism of nucleophilic addition, reactivity of alpha hydrogen in aldehydes, uses. 

Carboxylic Acids: Nomenclature, acidic nature, methods of preparation, physical and chemical properties; uses.

Unit 9: Amines 

Amines: Nomenclature, classification, structure, methods of preparation, physical and chemical properties, uses, identification of primary, secondary and tertiary amines. 

Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry. 

Unit 10: Biomolecules

Carbohydrates: Classification (aldoses and ketoses), monosaccharides (glucose and fructose), D-L configuration oligosaccharides (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen); Importance of carbohydrates. 

Proteins: Elementary idea of - amino acids, peptide bond, polypeptides, proteins, structure of proteins - primary, secondary, tertiary structure and quaternary structures (qualitative idea only), denaturation of proteins; enzymes. 

Hormones: Elementary idea excluding structure. 

Vitamins: Classification and functions. 

Nucleic Acids: DNA and RNA.

Sl. No. 

Subject

Marks

1.

Solutions

7

2.

Electrochemistry

9

3.

Chemical Kinetics

7

4.

d -and f -Block Elements

7

5.

Coordination Compounds

7

6.

Haloalkanes and Haloarenes

6

7.

Alcohols, Phenols and Ethers

6

8.

Aldehydes, Ketones and Carboxylic Acids

8

9.

Amines

6

10.

Biomolecules

7

Total

70

Evaluation Scheme for Examination

Marks

Volumetric Analysis

8 Marks

Salt Analysis 

8 Marks

Content Based Experiment

6 Marks

Project Work 

4 Marks

Class record and viva

4 Marks

Total

30 Marks 

Download CBSE Class 12 Chemistry Syllabus 2025-2026 PDF

Sl. No.

Domains

Total Marks

Approximate Percentage 

1.

Remembering and Understanding: Exhibit memory of previously learned material by recalling facts, terms, basic concepts and answers. Demonstrate understanding of facts and ideas by organizing, comparing, translating, interpreting, giving descriptions and stating main ideas.

28

40

2.

Applying: Solve problems to new situations by applying acquired knowledge, facts, techniques and rules in a different way.

21

30

3.

Analysing, Evaluating and Creating: Examine and break information into parts by identifying motives or causes. Make inferences and find evidence to support generalizations. Present and defend opinions by making judgments about information, validity of ideas or quality of work based on a set of criteria. Compile information together in a different way by combining elements in a new pattern or proposing alternative solutions.

21

30

Total

70

100

Practical

30

Gross Total

100