Bihar Board Class 12 Chemistry Previous Year Question Papers: The Bihar School Examination Board (BSEB) conducts the Class 12 Chemistry examination every year for Science stream students. Solving previous year Chemistry question papers is one of the most effective ways to understand the latest exam pattern, marking scheme, important reactions, numerical questions, organic conversions, and frequently asked concepts. Students preparing for the Bihar Board Intermediate Examination can download the Bihar Board Class 12 Chemistry Previous Year Question Papers PDF and practice them regularly to improve conceptual understanding, accuracy, and confidence.
Regular practice of the last five years’ Chemistry question papers helps students identify high-weightage chapters, revise important reactions, strengthen numerical problem-solving skills, and perform better in both objective and subjective sections of the board examination.
Bihar Board Class 12 Chemistry Previous Year Question Papers Overview
| Board Name | Bihar School Examination Board (BSEB) |
| Class | 12th (Intermediate) |
| Subject | Chemistry |
| Academic Session | 2026–27 |
| Exam Mode | Offline |
| Total Marks | 100 Marks |
| Previous Papers Available | 2021–2025 |
| Official Website | secondary.biharboardonline.com |
Bihar Board Class 12 Chemistry Previous Year Question Papers PDF Download
Students can download the year-wise Bihar Board Class 12 Chemistry Question Papers using the links below.
Bihar Board Class 12 Chemistry Question Paper 2026
| Paper | Download |
|---|---|
| Bihar Board Class 12 Chemistry Question Paper 2026 | To be available |
| Bihar Board Class 12 Chemistry Answer Key 2026 | To be available |
Bihar Board Class 12 Chemistry Question Paper 2025
| Paper | Download |
|---|---|
| Bihar Board Class 12 Chemistry Question Paper 2025 | Download PDF |
| Bihar Board Class 12 Chemistry Answer Key 2025 | Download PDF |
Bihar Board Class 12 Chemistry Question Paper 2024
| Paper | Download |
|---|---|
| Bihar Board Class 12 Chemistry Question Paper 2024 | Download PDF |
| Bihar Board Class 12 Chemistry Answer Key 2024 | Download PDF |
Bihar Board Class 12 Chemistry Question Paper 2023
| Paper | Download |
|---|---|
| Bihar Board Class 12 Chemistry Question Paper 2023 | Download PDF |
| Bihar Board Class 12 Chemistry Answer Key 2023 | Download PDF |
Bihar Board Class 12 Chemistry Question Paper 2022
| Paper | Download |
|---|---|
| Bihar Board Class 12 Chemistry Question Paper 2022 | Download PDF |
| Bihar Board Class 12 Chemistry Answer Key 2022 | Download PDF |
Bihar Board Class 12 Chemistry Question Paper 2021
| Paper | Download |
|---|---|
| Bihar Board Class 12 Chemistry Question Paper 2021 | Download PDF |
| Bihar Board Class 12 Chemistry Answer Key 2021 | Download PDF |
Bihar Board Class 12 Chemistry Exam Pattern
Before solving previous year papers, students should understand the latest Chemistry exam pattern prescribed by the Bihar Board.
| Component | Marks |
|---|---|
| Theory Examination | 70 |
| Practical Examination | 30 |
| Total Marks | 100 |
The theory paper generally consists of:
- Multiple Choice Questions (MCQs)
- Very Short Answer Questions
- Short Answer Questions
- Long Answer Questions
- Numerical Problems
- Chemical Reaction-Based Questions
- Organic Conversion Questions
- Assertion & Reasoning Questions
Understanding this pattern helps students prepare strategically and manage time effectively during the examination.
Bihar Board Class 12 Previous Year Question Papers PDF
Candidates preparing for the Bihar Board Intermediate Examination can download the Bihar Board Class 12 Previous Year Question Papers for all major subjects from the table below. Practicing previous year papers helps students understand the latest exam pattern, marking scheme, important topics, and the types of questions asked in the BSEB Class 12 Board Examination.
| Subject | Download PDF |
|---|---|
| Physics | Download PDF |
| Chemistry | Download PDF |
| Mathematics | Download PDF |
| Biology | Download PDF |
| English | Download PDF |
| Hindi | Download PDF |
| Accountancy | Download PDF |
| Business Studies | Download PDF |
| Business Economics | Download PDF |
| Entrepreneurship | Download PDF |
| Economics | Download PDF |
| Political Science | Download PDF |
| History | Download PDF |
| Geography | Download PDF |
| Psychology | Download PDF |
| Sociology | Download PDF |
| Philosophy | Download PDF |
| Home Science | Download PDF |
| Computer Science | Download PDF |
| Agriculture | Download PDF |
| Music | Download PDF |
| Maithili | Download PDF |
| Sanskrit | Download PDF |
| Urdu | Download PDF |
Important Chapters for Bihar Board Class 12 Chemistry
Most Bihar Board Chemistry papers include questions from the following chapters.
- Solutions
- Electrochemistry
- Chemical Kinetics
- Surface Chemistry
- General Principles and Processes of Isolation of Elements
- p-Block Elements
- d- and f-Block Elements
- Coordination Compounds
- Haloalkanes and Haloarenes
- Alcohols, Phenols and Ethers
- Aldehydes, Ketones and Carboxylic Acids
- Amines
- Biomolecules
- Polymers
- Chemistry in Everyday Life
Students should pay special attention to named reactions, organic conversions, numerical problems, important formulas, and NCERT-based theory questions.
Benefits of Solving Bihar Board Class 12 Chemistry Previous Year Question Papers
Regular practice of previous year papers offers several advantages.
- Understand the latest BSEB Chemistry exam pattern.
- Identify repeated questions and important chapters.
- Strengthen Organic, Physical, and Inorganic Chemistry concepts.
- Improve reaction writing and balancing skills.
- Practice important numerical problems.
- Increase speed and accuracy during the examination.
- Improve time management.
- Analyze weak areas and revise accordingly.
- Build confidence before the final board examination.
- Enhance overall Chemistry scores.
How to Solve Bihar Board Class 12 Chemistry Previous Year Papers?
Students should follow these steps for maximum benefit.
- Complete the Chemistry syllabus before attempting full-length papers.
- Solve each paper within the official exam duration.
- Attempt questions without referring to books.
- Compare your answers with the official answer key or textbook.
- Revise chapters where mistakes occur.
- Practice important reactions and numerical questions repeatedly.
- Solve all previous year papers multiple times before the examination.
Bihar Board Class 12 Chemistry Preparation Tips
Students can improve their performance by following these preparation strategies.
- Complete the NCERT textbook thoroughly.
- Revise Organic Chemistry reactions daily.
- Memorize important inorganic compounds and exceptions.
- Practice Physical Chemistry numericals regularly.
- Prepare short notes for formulas, reactions, and named reactions.
- Solve model papers and mock tests.
- Revise high-weightage chapters every week.
- Focus on conceptual clarity instead of rote learning.
- Practice assertion-reason and competency-based questions.



















