The Central Board of Secondary Education (CBSE) has officially released the Chemistry syllabus for Class 12 for the academic session 2025–2026. According to the latest update, there have been no changes or revisions made to the Chemistry curriculum this year. The syllabus provides a comprehensive overview of all topics, chapters, and units students are expected to cover throughout the session.
It includes a clear breakdown of the theoretical components and project work, along with assessment guidelines and course structure. Students can refer to the detailed syllabus table below to understand what will be covered during the academic year, including evaluation criteria and suggested experiments or assignments.
CBSE 12th Chemistry PDF 2025-26 Download Direct Link
Click here to download CBSE Class 12 Chemistry 2025-26 PDF
CBSE Class 12 Chemistry Syllabus 2025–26: Major Highlights
| Overview | Details |
| Board Name | Central Board of Secondary Education |
| 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 Assessment) |
CBSE Class 12 Chemistry: Paper Structure (2025–26)
| Component | Maximum Marks | Details |
| Theory Paper | 70 Marks | Based on 10 Units (listed below) |
| Internal Assessment | 30 Marks | Practical work, project, viva, record |
| Total | 100 Marks | |
CBSE Class 12 Chemistry Syllabus 2025–26
| Unit No. | Unit Title | Topics Covered |
| 1 | Solutions | Types of solutions, concentration expressions (solids in liquids), solubility of gases in liquids, solid solutions, Raoult’s law, colligative properties (RVP, elevation of BP, depression of FP, osmotic pressure), molecular mass determination, abnormal molecular mass, Van’t Hoff factor. |
| 2 | Electrochemistry | Redox reactions, EMF of a cell, standard electrode potential, Nernst equation, Gibbs energy change relation, electrolytic conductance, specific/molar conductivity, conductivity vs. concentration, Kohlrausch’s Law, electrolysis, dry cells, electrolytic & Galvanic cells, lead accumulator, fuel cells, corrosion. |
| 3 | Chemical Kinetics | Reaction rate (average & instantaneous), rate-affecting factors (concentration, temperature, catalyst), order & molecularity, rate law, specific rate constant, integrated rate equations (0 & 1st order), half-life, collision theory (elementary), activation energy, Arrhenius equation. |
| 4 | d and f Block Elements | Transition metals: General properties, electronic configuration, oxidation states, catalytic, magnetic, alloy-forming properties; K₂Cr₂O₇ & KMnO₄ prep & properties. Lanthanides: Electronic configuration, lanthanide contraction. Actinides: Electronic config, oxidation states, comparison with lanthanides. |
| 5 | Coordination Compounds | Introduction, ligands, coordination number, colour, magnetism, shapes, IUPAC naming, Werner’s theory, VBT, CFT, structure, isomerism, applications (qualitative analysis, metallurgy, biological systems). |
| 6 | Haloalkanes and Haloarenes | Haloalkanes: Nomenclature, C–X bond nature, properties, optical activity, substitution mechanisms. Haloarenes: C–X bond nature, substitution reactions, uses & environmental effects of DCM, CHCl₃, CCl₄, iodoform, freons, DDT. |
| 7 | Alcohols, Phenols and Ethers | Alcohols: Nomenclature, preparation, properties, identification (1°, 2°, 3°), dehydration mechanism, uses (methanol, ethanol). Phenols: Nomenclature, preparation, properties, acidity, electrophilic substitution, uses. Ethers: Nomenclature, preparation, properties, uses. |
| 8 | Aldehydes, Ketones and Carboxylic Acids | Aldehydes & Ketones: Nomenclature, carbonyl nature, preparation, properties, nucleophilic addition, α-H reactivity, uses. Carboxylic acids: Nomenclature, acidity, preparation, properties, uses. |
| 9 | Amines | Nomenclature, classification, structure, preparation, properties, identification (1°, 2°, 3°), uses. Diazonium salts: Preparation, reactions, importance in organic synthesis. |
| 10 | Biomolecules | Carbohydrates: Classification, monosaccharides (glucose, fructose), D-L config, oligosaccharides (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen), importance. Proteins: Amino acids, peptide bonds, protein structure (primary to quaternary), denaturation, enzymes. Hormones: Basic idea (structure excluded). Vitamins: Classification, functions. Nucleic Acids: DNA, RNA |
CBSE Class 12 Chemistry 2025–26 Chapter-wise Marks Distribution
| Sl. No. | Unit Name | 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 (Theory) | 70 |
CBSE Class 12 Chemistry Practical Marking Scheme 2025–26
| Marking Component | Marks |
| Volumetric Analysis | 8 |
| Salt Analysis | 8 |
| Content-Based Experiment | 6 |
| Project Work | 4 |
| Class Record and Viva | 4 |
| Total | 30 |
Prescribed Books for CBSE Class 12 Chemistry
| Book Title | Publisher |
| Chemistry Part – I, Class-XII | NCERT |
| Chemistry Part – II, Class-XII | NCERT |
| Manual of Microscale Chemistry Laboratory Kit | Prescribed by CBSE |
CBSE Class 12 Chemistry Question Paper Design 2025–26
| Sl No. | Domains | Total Marks | Approx 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 (Theory) | 70 | 100% | |
| Practical | 30 | ||
| Gross Total | 100 |
CBSE Class 12 Chemistry 2025–26 Question Paper Pattern
| Instruction | Details |
| Chapter-wise Weightage | Not specified; however, all chapters will be adequately covered. |
| Paper Design Templates | Suitable internal variations allowed to generate multiple versions. |
| Overall Choice in Question Paper | Not permitted. |
| Internal Choices | 33% internal choice will be provided across all sections of the paper. |
