Bihar Board Class 12 Chemistry Weightage 2026 Unit and Chapter-Wise Mark Distribution
Bihar Board Class 12 Chemistry Weightage 2026 will help you to pick the important topics first based on the weightage of marks while doing the final preparation. The chemistry exam will be conducted for 100 marks, with 70 marks allocated to theory and 30 marks to practicals. Check details here.
Bihar Board Class 12 Chemistry Weightage 2026: To help you prepare effectively for your class 12 board exams, we have provided unit-wise weightage of marks for the Chemistry subjects. The weightage will help you in prioritizing important topics. For example, the unit with the highest weightage of marks, i.e., 8 marks, is P-Block Elements, followed by the 6-mark unit, i.e., Aldehydes, Ketones, and Carboxylic Acids. Similarly, there are many units of 5 marks each, which you can pick first while preparing for the final exam. You can also downloadBihar Board Class 12 Chemistry Previous Year Question Papersto get a better understanding of the pattern of the paper and the weightage of marks. Referring to these papers, along with the Bihar Board Class 12 Chemistry Weightage 2026 provided here, will give you a clear strategy for exam preparation.
Bihar Board Class 12 Chemistry Weightage 2026 - Unit-wise
BSEB 12th Chemistry theory paper consists of 16 units, including p-block Elements, which is of 8 marks, and Aldehydes, Ketones, and Carboxylic Acids, which is of 6 marks, with the most weightage, while units like Polymers and Chemistry in Everyday Life are of 3 marks each. The total marks allocated for the exam are 100, of which 70 marks are for the theory paper and 30 marks for the practical assessment. All the units of the BSEB 12th Chemistry paper have been mentioned in the table below.Unit | Title | Marks |
|---|---|---|
1 | Solid State
| 4 |
2 | Solutions
| 5 |
3 | Electrochemistry
| 5 |
4 | Chemical Kinetics
| 5 |
5 | Surface Chemistry
| 4 |
6 | General Principles and Process of Isolation of Elements
| 3 |
7 | P-Block Elements
| 8 |
8 | d-and-f-Block Elements
| 5 |
9 | Coordination Compounds
| 3 |
10 | Haloalkanes and Haloarenes
| 4 |
11 | Alcohols, Phenols, and Ethers
| 4 |
12 | Aldehydes, Ketones, and Carboxylic Acids
| 6 |
13 | Organic Compounds Containing Nitrogen
| 4 |
14 | Biomolecules
| 4 |
15 | Polymers
| 3 |
16 | Chemistry In Everyday Life
| 3 |
Total | 70 | |
Understanding theBihar Board Class 12 Chemistry Syllabus 2025-26topic-wise weightage is very important for your exam preparations. You can maximize your scores by focusing on high-weightage topics such as p-Block, d, and f-Block Elements and Electrochemistry & Chemical Kinetics. Similarly, topics such as coordination compounds and organic compounds containing nitrogen have a lower weightage but should not be overlooked.
BSEB 12th Chemistry Blueprint 2026
BSEB 12th Chemistry consists of two sections, i.e., A and B. Section A has 70 objective-type questions, each worth one mark, out of which 35 have to be answered, which is worth 35 marks. Section B has 10 short-answer questions of 2 marks each and 3 long-answer questions of 5 marks each. Also, there is no negative marking. Check the blueprint below:| Sections | Types of Questions | Number of questions | Marks Allotted |
|---|---|---|---|
| A | Objective-type questions | 35 out of 70 | 1 * 35 = 35 |
| B | Short-answer and long-answer questions | 10 out of 20 + 3 out of 6 | 2 * 10 + 5 * 3 = 35 |
We hope the information added above is helpful for your final preparation. You can keep visiting the page for the latest information about the Bihar Board Class 12 Chemistry Weightage 2026 Unit and Chapter-Wise Mark Distribution.