CBSE Class 12 Chemistry — Guess Paper & Important Questions 2027
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Everything for Chemistry in one place — guess paper, important questions and chapter-wise important topics for the 2027 exam, from analysis of 5 board + 2 official sample papers (2022–2026).
Guess Paper 2027
A full 33-question paper on the official pattern, built from the most-likely questions.
Open guess paper PDFImportant Questions
55 question patterns that have repeated across past papers.
See repeated questions PDFImportant Topics
Every chapter’s topics ranked by how often and how recently they were asked.
See important topicsTop 5 topics
| # | Topic | Chapter | Importance |
|---|---|---|---|
| 1 | Carbohydrates: classification, structure of glucose/fructose and reactions | Biomolecules | ★★★★★ |
| 2 | Werner's theory, ligands, coordination number and IUPAC nomenclature | Coordination Compounds | ★★★★☆ |
| 3 | Rate of reaction, rate law, order and molecularity | Chemical Kinetics | ★★★★☆ |
| 4 | Conductance, molar conductivity and Kohlrausch's law | Electrochemistry | ★★★★☆ |
| 5 | Nernst equation and its applications (cell EMF, equilibrium constant, delta G) | Electrochemistry | ★★★☆☆ |
CBSE Class 12 Chemistry exam pattern 2027
Key facts
- Maximum marks: 70
- Duration: 3 hours
- Sections: 5 (A, B, C, D, E)
- Exam: 2027 CBSE Class 12 board exam
| Section | What is asked | Marks |
|---|---|---|
| A | 16 questions of 1 mark each — 14 MCQ + 2 Assertion-Reason | 16 |
| B | 5 Very Short Answer questions of 2 marks each | 10 |
| C | 7 Short Answer questions of 3 marks each | 21 |
| D | 2 Case-study based questions of 4 marks each (with sub-parts) | 8 |
| E | 3 Long Answer questions of 5 marks each | 15 |
CBSE Class 12 Chemistry chapter-wise weightage 2027
| Unit | Chapters | Marks |
|---|---|---|
| Physical Chemistry | Solutions, Electrochemistry, Chemical Kinetics | 23 |
| Inorganic Chemistry | d- and f-Block Elements, Coordination Compounds | 14 |
| Organic Chemistry | Haloalkanes and Haloarenes, Alcohols, Phenols and Ethers, Aldehydes, Ketones and Carboxylic Acids, Amines, Biomolecules | 33 |
Unit marks as given in the official syllabus.
Frequently asked questions
Is this the real CBSE Class 12 Chemistry guess paper 2027?
No. It is a practice guess paper built by analysing which questions and topics repeat across 5 board + 2 official sample papers (2022–2026) for CBSE Class 12 Chemistry. It follows the latest official exam pattern but is not an official or leaked paper.
What is the CBSE Class 12 Chemistry exam pattern for 2027?
The CBSE Class 12 Chemistry 2027 paper is 70 marks and 3 hours long, in 5 sections: Section A — 16 questions of 1 mark each — 14 MCQ + 2 Assertion-Reason; Section B — 5 Very Short Answer questions of 2 marks each; Section C — 7 Short Answer questions of 3 marks each; Section D — 2 Case-study based questions of 4 marks each (with sub-parts); Section E — 3 Long Answer questions of 5 marks each. Highest-weightage units: Organic Chemistry (33 marks), Physical Chemistry (23 marks), Inorganic Chemistry (14 marks).
How many questions repeat in CBSE Class 12 Chemistry?
We found 55 question patterns that appeared in two or more of the analysed papers (5 board + 2 official sample papers). The most-repeated ones are listed on the Important Questions page.
What are the most important topics for CBSE Class 12 Chemistry 2027?
The top topics by repetition are Carbohydrates: classification, structure of glucose/fructose and reactions; Werner's theory, ligands, coordination number and IUPAC nomenclature; Rate of reaction, rate law, order and molecularity. The full ranked list is on the Important Topics page.
Where can I see the CBSE Class 12 Chemistry guess paper?
The full 33-question guess paper is on the Guess Paper page — free to view, with each question tagged by chapter and how often it has appeared in past papers.