CBSE Class 12 Chemistry Important Questions
CBSE Class 12 Chemistry important questions for the 2027 board exam, with unit-wise marks for 2026-27, chapter-wise practice links and tips.
CBSE Class 12 Chemistry for the 2027 board exam: which units carry the most marks, where to find chapter-wise important questions, and how to practise them.
Chapter-wise important questions with answers are on our CBSE Class 12 Chemistry important questions page.
Unit-Wise Marks (2026-27)
| Unit | Marks |
|---|---|
| Solutions | 7 |
| Electrochemistry | 9 |
| Chemical Kinetics | 7 |
| d- and f-Block Elements | 7 |
| Coordination Compounds | 7 |
| Haloalkanes and Haloarenes | 6 |
| Alcohols, Phenols and Ethers | 6 |
| Aldehydes, Ketones and Carboxylic Acids | 8 |
| Amines | 6 |
| Biomolecules | 7 |
| Total (theory) | 70 |
Surface Chemistry, Isolation of Elements, Polymers and Chemistry in Everyday Life are assessed only by your school in 2026-27, and Solid State is not in the syllabus.
Source: CBSE Class 12 Chemistry syllabus 2026-27 (cbseacademic.nic.in).
How to Practise Important Questions
- Start with the biggest units — they carry the most marks.
- Solve without looking at solutions first — this builds real exam confidence.
- Time yourself — practise under exam conditions.
- Mark questions you get wrong — revise these again 2–3 days before the exam.
Practise Chemistry chapter-wise
Super Tutor has chapter-wise Chemistry practice quizzes with answers for CBSE Class 12.
Try it freePreparation Strategy for CBSE Chemistry
- Learn named reactions and conversions in organic chemistry.
- Practise numericals in Solutions, Electrochemistry and Chemical Kinetics.
- Read the textbook line by line for inorganic chemistry and coordination compounds.
- Write balanced equations with reaction conditions.
Exam Tips for CBSE Class 12 Chemistry
- Read every question twice before starting — misreading costs marks.
- Attempt all questions — there is no negative marking in board exams.
- Show all steps — the marking scheme gives marks for steps, not just the final answer.
- Draw neat, labelled diagrams where the question asks for them.
- Keep 15 minutes for revision — check for silly mistakes and unanswered questions.
Unit-wise marks from the CBSE Class 12 Chemistry syllabus 2026-27 (cbseacademic.nic.in).
Turn this into exam marks
Super Tutor gives you chapter summaries, revision notes, practice quizzes and an AI doubt solver matched to your board syllabus — so you revise smarter, not longer.
Start freeFrequently Asked Questions
Which chapters carry the most marks in CBSE Class 12 Chemistry?
In the CBSE Class 12 Chemistry syllabus 2026-27, the biggest units are Electrochemistry (9 marks), Aldehydes, Ketones and Carboxylic Acids (8 marks), Solutions (7 marks). The full unit-wise split is in the table on this page.
Is NCERT enough for CBSE Class 12 Chemistry?
NCERT textbooks are the prescribed books for CBSE, and board questions are built on them. Finish every NCERT example and exercise first, then practise sample papers and previous year papers.
How many days are enough to prepare for CBSE Class 12 Chemistry?
With focused preparation, 30–45 days if you have already studied the syllabus once. Give Chemistry 2–3 hours a day, and in the last week focus only on revision and past papers. Starting earlier is always better.
What are the most repeated questions in CBSE Chemistry?
Certain question types come up regularly — reactions and conversions, numericals and reasoning-based questions from the major chapters. Solving the last few years' papers and the latest sample or specimen paper shows you these patterns.