CBSE Class 12 Chemistry Syllabus 2025-26
Official chapter-wise syllabus for CBSE Class 12 Chemistry — unit-wise marks distribution, list of deleted/reduced topics, and the 2025-26 exam paper pattern. Use this page alongside the Class 12 Chemistry preparation guide for full exam readiness.
2025-26
Academic Year
70
Theory Marks
30
Practical Marks
10
Total Chapters
Unit-Wise Marks Distribution
70 marks (theory)Unit I: Solutions
Solutions
10% of theory marks
Unit II: Electrochemistry
Electrochemistry
13% of theory marks
Unit III: Chemical Kinetics
Chemical Kinetics
10% of theory marks
Unit IV: d and f Block Elements
The d and f Block Elements
10% of theory marks
Unit V: Coordination Compounds
Coordination Compounds
10% of theory marks
Unit VI: Haloalkanes and Haloarenes
Haloalkanes and Haloarenes
9% of theory marks
Unit VII: Alcohols, Phenols and Ethers
Alcohols, Phenols and Ethers
9% of theory marks
Unit VIII: Aldehydes, Ketones and Carboxylic Acids
Aldehydes, Ketones and Carboxylic Acids
11% of theory marks
Unit IX: Amines
Amines
9% of theory marks
Unit X: Biomolecules
Biomolecules
10% of theory marks
Chapter-Wise Syllabus
10 chapters| # | Chapter | Marks |
|---|---|---|
| 1 | Solutions | 7 |
| 2 | Electrochemistry | 9 |
| 3 | Chemical Kinetics | 7 |
| 4 | d & f Block Elements | 7 |
| 5 | Coordination Compounds | 7 |
| 6 | Haloalkanes & Haloarenes | 6 |
| 7 | Alcohols, Phenols & Ethers | 6 |
| 8 | Aldehydes, Ketones & Carboxylic Acids | 8 |
| 9 | Amines | 6 |
| 10 | Biomolecules | 7 |
Deleted / Reduced Topics 2025-26
Note: The following topics have been deleted or reduced from the CBSE Class 12 Chemistry syllabus. Do not spend time studying these for the 2025-26 board exam. Always verify with the official CBSE syllabus document before your exam.
Solid State
Entire chapter removed from Class 12 board exam (2023-24 onwards)
Surface Chemistry
Entire chapter removed from board exam
General Principles and Processes of Isolation of Elements
Entire chapter removed
p-Block Elements
Entire chapter removed from Class 12 (moved to Class 11)
Polymers
Entire chapter removed from Class 12 board exam
Chemistry in Everyday Life
Entire chapter removed from Class 12 board exam
Exam Paper Pattern 2025-26
70 marks total| Section | Marks/Q | Count | Total | |
|---|---|---|---|---|
| Section A | 1 | 16 | 16 | |
| Section B | 2 | 5 | 10 | |
| Section C | 3 | 7 | 21 | |
| Section D | 5 | 3 | 15 | |
| Section E | 4 | 2 | 8 | |
| Total Theory Marks | 70 | |||
Practical / Internal Assessment Marks — assessed throughout the year by your school (projects, lab work, notebooks).
How to Use This Syllabus
Prioritise by marks
Use the unit-wise distribution above. Focus first on units with 20+ marks — they give the best return on study time.
Skip deleted topics
CBSE will not ask deleted topics in the board exam. Don't waste time on them — use that time for NCERT exercises instead.
Know the paper pattern
Section E (Case Study) has new-format questions many students ignore. Practise these separately — they're easy marks.
You know the syllabus. Now practise it.
ClearSteps gives you chapter-wise mock tests aligned to the exact CBSE Class 12 Chemistry syllabus, with AI evaluation against the official marking scheme.