CBSE Class 12 Chemistry Syllabus 2026-27: Unit-wise Weightage and Detailed Topics

The CBSE Class 12 Chemistry Syllabus 2026-27 has been designed to provide students with a deep conceptual understanding of chemical sciences. This updated curriculum ensures that students are well-prepared for both board examinations and competitive professional courses like medicine and engineering. The pedagogy emphasises modern developments, including green chemistry and biomolecules, while maintaining international standards of rigour and depth.

CBSE Class 12 Chemistry Syllabus 2026-27: Theory Paper Structure

The theory examination for Chemistry Class 12 Syllabus 2026-27 is conducted for 70 marks with a duration of 3 hours. Below is the unit-wise distribution of marks:

Official CBSE Class 12 Chemistry Syllabus 2026-27 PDF

To ensure you are following the most recent academic guidelines, it is recommended to download the official curriculum document. This PDF contains the complete pedagogical objectives, detailed practical experiments, and the evaluation scheme for visually challenged students, providing a transparent roadmap for the 2026-27 academic session. 

 Accessing the official file helps students align their preparation with the NCERT-prescribed textbooks and specific assessment criteria used by examiners.

CBSE Class 12 Chemistry Syllabus 2026-27 PDF

Detailed Breakdown of Class 12 Chemistry Syllabus 2026-27

The theory syllabus is structured into ten units designed to build a comprehensive conceptual foundation, moving from the physical principles of reactions to the intricacies of organic synthesis. Students are expected to master chemical phenomena at macroscopic and molecular levels while applying these concepts to real-life technological and medical situations.

Physical Chemistry

• Solutions: Focuses on types of solutions, expression of concentration, solubility of gases in liquids, solid solutions, and colligative properties.

• Electrochemistry: Covers redox reactions, conductance in electrolytic solutions, specific and molar conductivity, Kohlrausch's Law, and electrolysis.

• Chemical Kinetics: Includes rate of a reaction, factors affecting rates, order and molecularity of a reaction, and rate law.

Inorganic Chemistry

• d- and f-Block Elements: General introduction, electronic configuration, occurrence and characteristics of transition metals, and preparation of $K_2Cr_2O_7$ and $KMnO_4$.

• Coordination Compounds: Introduction, ligands, coordination number, IUPAC nomenclature, and bonding theories like VBT and CFT.

Organic Chemistry

This section of the Chemistry Syllabus Class 12 2026-27 is crucial for high scoring:

• Haloalkanes and Haloarenes: Nomenclature, nature of C-X bond, and mechanisms of substitution reactions.

• Alcohols, Phenols, and Ethers: Physical and chemical properties, and identification of primary, secondary, and tertiary alcohols.

• Aldehydes, Ketones, and Carboxylic Acids: Nomenclature, methods of preparation, and physical-chemical properties.

• Amines: Structure, classification, and chemical reactions of diazonium salts.

Biomolecules

• Carbohydrates, Proteins, and Nucleic Acids: Classification, structure, and importance of biological molecules like DNA and RNA.

Internal Assessment and Practical Evaluation

The practical component of the syllabus accounts for 30 marks. The evaluation scheme is as follows:

• Volumetric Analysis: 08 Marks

• Salt Analysis: 08 Marks

• Content-Based Experiment: 06 Marks

• Project Work: 04 Marks

• Class Record and Viva: 04 Marks