What are the high weightage chapters for class 12 in 2026?
The CBSE Class 12 Chemistry Weightage 2026 helps students understand important chapters, marks distribution, and high-scoring topics for board exams, JEE Main, NEET, and CUET preparation.
Theory Marks: 70
Practical Marks: 30
Total Marks: 100
| Unit | Chapter | Weightage |
|---|---|---|
| Unit 1 | Solutions | 7 Marks |
| Unit 2 | Electrochemistry | 9 Marks |
| Unit 3 | Chemical Kinetics | 7 Marks |
| Unit 4 | d and f Block Elements | 7 Marks |
| Unit 5 | Coordination Compounds | 7 Marks |
| Unit 6 | Haloalkanes and Haloarenes | 6 Marks |
| Unit 7 | Alcohols, Phenols and Ethers | 6 Marks |
| Unit 8 | Aldehydes, Ketones and Carboxylic Acids | 8 Marks |
| Unit 9 | Amines | 6 Marks |
| Unit 10 | Biomolecules | 7 Marks |
Most Important Chapters
Electrochemistry
Coordination Compounds
Solutions
Biomolecules
Aldehydes, Ketones and Carboxylic Acids
Important Formulas
Molarity = Moles of solute / Volume of solution (L)
Mole Fraction = Moles of component / Total moles
Nernst Equation: Ecell = E°cell − (0.0591/n) logQ
Half-life Formula: t1/2 = 0.693/k
Chemistry Practical Marks Distribution
| Component | Marks |
|---|---|
| Experiments | 16 |
| Viva | 6 |
| Project | 4 |
| Practical Record | 4 |
Preparation Tips
Study NCERT thoroughly
Revise formulas daily
Practice reactions and numericals
Solve previous year papers
Focus more on high-weightage chapters
The exact weightage may slightly change according to the latest CBSE sample papers and official updates.