Students preparing for the CBSE Class 12 Chemistry board exam in 2026 can focus on certain topics that appear often. This information comes from checking past exam papers. The Chemistry theory paper is for 70 marks . The practical exam holds 30 marks . Students must get passing marks in both parts to clear the board exams.
For the theory exam, students must study the syllabus given in NCERT textbooks . All questions will come from these books. An analysis of past exam papers shows which topics are asked repeatedly. This can help students plan their studies better.
Most Repeated Topics for CBSE 12th Chemistry 2026
Experts have looked at previous years' board question papers. They have listed topics that frequently appear in the exam. Focusing on these topics can help students prepare well for the 2026 Chemistry exam.
| Chapter Name | Expected Marks | Most Repeated Topics |
| Haloalkanes and Haloarenes | 6 Marks | Nuclear Substitution, Finkelstein Reaction, Swartz Reaction |
| Alcohols, Phenols, and Ethers | 6 Marks | Hydration, Oxidation, Dehydration, Acidic Nature of Phenol |
| Aldehydes, Ketones, and Carboxylic Acids | 8 Marks | Reductive Ozonolysis, Hydration of Alkene, Acidic Nature of Benzoic Acid |
| Amines | 6 Marks | Basic Nature of Amines, Hoffmann Bromamide Degradation Reaction |
| Biomolecules | 7 Marks | Types of Carbohydrates, Reducing vs Non-Reducing Sugars, Fibrous vs Globular Proteins, DNA vs RNA |
| Solutions | 7 Marks | Henry’s Law and its applications, Raoult’s Law, Colligative Properties, Osmosis |
| Electrochemistry | 9 Marks | Galvanic Cell, Electrolytic Cell, Faraday’s First Law of Electrolysis, Lead Storage Battery, Button Cell, Fuel Cell |
| Chemical Kinetics | 7 Marks | Rate Law, Molecularity vs Order of Reaction |
| Coordination Compounds | 7 Marks | Nomenclature, Isomerism |
| D & F-Block Elements | 7 Marks | Electronic Configuration, Oxidation States, Physical Properties |
Study Tips for Chemistry Board Exam
To prepare effectively, students should complete the entire NCERT syllabus for CBSE Class 12 Chemistry. This forms the base for all questions. A good way to improve exam readiness is to practice previous year question papers . This helps students manage their time during the actual exam. It also shows them the types of questions asked.
