Class 12 & entrance exams · BoardPrep blog
How to Score 90%+ in CBSE Class 12 PCM (Physics, Chemistry, Maths)
A board-paper-based strategy to score 90%+ in Class 12 PCM, covering the highest-weightage chapters, answer-writing habits and a final-months routine.
90%+ in PCM is very achievable when you combine NCERT depth with lots of real board practice, especially if you're also doing JEE.
Know where the marks are
| Chapter | Avg marks per paper | Share |
|---|---|---|
| Integrals | 16.6 | 26% |
| Relations & Functions | 7.5 | 12% |
| Probability | 6.8 | 11% |
| Applications of Derivatives | 5.8 | 9% |
| Vectors | 5.4 | 8% |
Averaged across 8 CBSE Class 12 Maths board papers, 2023–2026. All chapters
In Physics, Moving Charges & Magnetism, Electric Charges & Fields and Semiconductor Electronics lead. In Chemistry, Coordination Compounds, Aldehydes & Ketones and Electrochemistry. See Physics and Chemistry.
Subject strategies
- Maths: practise every NCERT exercise and example, especially Integrals and Calculus. Show every step. How to score 90+ in Maths
- Physics: learn derivations by understanding them, practise numericals with units, and draw ray diagrams neatly. List of important derivations
- Chemistry: NCERT in-text and exercise questions, named reactions, reasoning ("give reasons") questions. Named reactions list
Final 8 weeks
- 2–3 full timed papers per subject per week
- an error log, reviewed every Sunday
- derivations and reactions revised in short daily sessions
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