ElementizeUnit-wise marks
The Chemistry board exam has 70 marks for theory and 30 for practicals. The theory marks are spread across ten units:
| Unit | Marks | Branch |
|---|---|---|
| Solutions | 7 | Physical |
| Electrochemistry | 9 | Physical |
| Chemical Kinetics | 7 | Physical |
| d- and f-Block Elements | 7 | Inorganic |
| Coordination Compounds | 7 | Inorganic |
| Haloalkanes and Haloarenes | 6 | Organic |
| Alcohols, Phenols and Ethers | 6 | Organic |
| Aldehydes, Ketones and Carboxylic Acids | 8 | Organic |
| Amines | 6 | Organic |
| Biomolecules | 7 | Organic |
| Total theory | 70 |
Organic chemistry is 33 of the 70 marks, physical chemistry 23, and inorganic 14. That balance should shape your revision time.
Based on the CBSE 2025–26 curriculum. Check the latest syllabus and sample paper on the CBSE academic website each year.
How the paper is set
The recent CBSE sample papers follow this design for 70 marks in 3 hours:
| Section | Questions | Type | Marks |
|---|---|---|---|
| A | 16 × 1 | MCQs, including assertion–reason | 16 |
| B | 5 × 2 | Very short answer | 10 |
| C | 7 × 3 | Short answer | 21 |
| D | 2 × 4 | Case-based | 8 |
| E | 3 × 5 | Long answer | 15 |
A good share of questions test application of concepts rather than recall, so practise explaining why, not only what.
Chapter priorities
Electrochemistry (9)
Nernst equation numericals, the relation between ΔG° and E°, conductivity and molar conductivity, and Kohlrausch's law.
Aldehydes, Ketones & Acids (8)
Named reactions (aldol, Cannizzaro, Clemmensen, Wolff–Kishner), distinguishing tests, and acidity trends.
Biomolecules (7)
Mostly direct NCERT content: glucose structure and reactions, proteins, vitamins and nucleic acids. Easy marks for careful readers.
Coordination Compounds (7)
IUPAC names, isomerism, valence bond and crystal field theory. Rule-based and very scoring once practised.
For the organic units, conversions and mechanisms are asked every year. Our interactive Reaction Mechanisms note covers SN1, SN2, elimination and addition step by step.
An 8-week revision plan
- Weeks 1–2: Physical chemistry. Solutions, electrochemistry and kinetics, with every NCERT numerical solved again.
- Weeks 3–4: Organic chemistry. One unit every two or three days; build a single conversion chart linking all functional groups.
- Week 5: Inorganic chemistry. d- and f-block trends and coordination compounds; read the NCERT text line by line.
- Week 6: Biomolecules and a full revision of named reactions and distinguishing tests.
- Weeks 7–8: Three to five full sample papers in 3 hours each, then targeted revision of every mistake.
Writing answers that score
- Numericals: write the formula, substitute with units, and box the final answer with its unit.
- Reactions: write balanced equations with reagents and conditions above the arrow.
- Reasoning questions: give the reason in one clear line first, then add the supporting detail.
- Naming: use correct IUPAC names. Small errors in locants cost marks.
Questions
Can I prepare for the board exam and NEET or JEE together?
Yes. The syllabus is the same NCERT content. Board exams reward clear written answers, while NEET and JEE reward speed and accuracy. Practise both formats on each chapter. See our NEET Chemistry and JEE Chemistry pages.
What about the 30 practical marks?
Practical marks come from experiments, salt analysis, a project, your practical record and viva in school. Keep your record book complete and revise the salt-analysis tests.
Do you offer Class 12 classes?
Yes, online on the Elementize app. WhatsApp +91 63745 11006 for details.
Study Chemistry with Elementize
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