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Bihar Board 12th Biology Answer Key 2026 (Feb 2) - Download Set-Wise PDF
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The Bihar School Examination Board (BSEB) conducted the Class 12 Biology theory exam on Monday, February 2, 2026. The Bihar Board Class 12 biology exam ended at 12:45 pm. The board released the official Bihar Board 12th biology 2026 answer key after all examinations on February 28, 2026. Students can download the Bihar Board Class 12 answer key for all sets (A, B, C, D, E, F, G, H, I, and J).
BSEB Class 12 Answer Key: Download Link
This Story also Contains
- Important Dates for BSEB 12th Biology Answer Key 2026
- How to Download the Official Bihar Board 12th Biology Answer Key?
- Objection with Bihar Board Class 12 Biology Answer Key
- Bihar Board 12th Biology Exam Pattern 2026
Many institutes and subject experts released the unofficial BSEB Class 12 biology answer key after the exam. Students can use the MCQ answers to estimate their scores before the official BSEB 12th results are declared. If there is any discrepancy in the official BSEB 12th Biology answer key, candidates are also allowed to raise objections till March 6, 2026.
Bihar Board 12th Biology Answer Key (Set A to J): Check Answers Here
Set Wise Unofficial BSEB 12th Biology Answer Key 2026
| Set | Answer Key Link |
|---|---|
BSEB Class 12 Biology answer key link for Set A | |
BSEB Class 12 Biology answer key link for Set B | |
BSEB Class 12 Biology answer key link for Set C | Available soon |
BSEB Class 12 Biology answer key link for Set D | |
BSEB Class 12 Biology answer key link for Set E | |
BSEB Class 12 Biology answer key link for Set F | |
BSEB Class 12 Biology answer key link for Set G | Available soon |
BSEB Class 12 Biology answer key link for Set H | Available soon |
BSEB Class 12 Biology answer key link for Set I | |
BSEB Class 12 Biology answer key link for Set J |
Important Dates for BSEB 12th Biology Answer Key 2026
Students can prepare using the recently released official BSEB 12th model papers and Bihar Board inter previous year solutions to understand the marking scheme and expected answers. Students can download the 2026 Bihar Board Class 12 Biology answer key for the latest exam for sets A-J in PDF format.
| Event | Date |
|---|---|
Bihar Board 12th Biology exam date | February 2, 2026 (9:30 AM - 12:45 PM) |
Unofficial BSEB 12th Biology answer key | February 2, 2026 (Afternoon) |
Official Bihar Board Class 12 Biology Answer Key | February 28, 2026 |
Bihar Board 12th objection window date | Till March 6, 2026 |
March 23, 2026 |
How to Download the Official Bihar Board 12th Biology Answer Key?
The official BSEB Class 12 biology answer key PDF can be downloaded from the Bihar Board’s website. Follow these steps to get the official Bihar Board 12th Biology answer key PDF from the BSEB portal:
Visit the official website: biharboardonline.bihar.gov.in.
Look for the link "Register objection regarding answer key (Inter exam 2026)".
Enter the roll code and roll number.
Select 'Biology' from the subject list.
The Bihar Board 12th answer key for all sets (Sets A to J) will appear in PDF format.
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Objection with Bihar Board Class 12 Biology Answer Key
BSEB 12th Biology answer keys have been released on the board’s portal (e.g., objection.biharboardonline.com) on February 28, 2026. Students can raise objections against the Bihar Board 12th provisional answer key till March 6, 2026. After checking and fixing any errors reported by students, the board will issue the final version of the Class 12 Bihar Board Biology answer key.
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Download NowBihar Board 12th Biology Exam Pattern 2026
The Bihar Board 12th Bio exam consists of 100 marks (70 Theory + 30 Practical). The theory paper is divided into two sections:
Section A (MCQs): It contains 70 objective questions; students must answer any 35. Each carries 1 mark.
Section B (Subjective): It includes short and long-answer questions totalling 35 marks.
Frequently Asked Questions (FAQs)
Q: What is the Bihar Board 12th Biology Answer Key 2026?
A:
The Bihar School Examination Board (BSEB) releases the answer key for the Class 12 Biology exam to help students check and match their answers after the exam. Students can use it to estimate their score before the official BSEB 12th result comes out.
Q: What does the Bihar Board biology answer key 2026 include?
A:
The Bihar Board Class 12 Biology answer key provides objective (MCQ) answers for each set of the Biology question paper. It will cover only the objective section. The BSEB 12th biology subjective answers are evaluated by examiners later.
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Questions related to Bihar Board 12th
On Question asked by student community
Have a question related to Bihar Board 12th ?
Hi Aman Kumar
For the Bihar Board Class 12 English Half-Yearly Question Paper 2026-27, you can check the Careers360 page. The question paper and answer key will be updated on this page
Hi Garima,
Sorry, currently we do not have an agriculture question paper, but I'm providing you with a link to an article. This article will be updated from time to time; keep checking the article. The question paper will be updated in the article.
https://school.careers360.com/boards/bseb/bihar-board-class-11-quarterly-exam-question-paper-2026
Hi Sakshi Raj
Check the links given below for last 5 years' Bihar Board final exam question papers
Hi Anshu Kumar
You can find the Bihar Board Class 11 Half-Yearly Question Papers 2025-26 for different subjects on Careers360, including Maths, Physics, Chemistry and Biology.
Click on the link below:
https://school.careers360.com/boards/bseb/bihar-board-class-11-half-yearly-question-paper-2025-26
If you need a particular subject, you can also use the Maths paper
Hi Akanksha,
You can download the half-yearly physics question paper.
If you need more resources, please let us know.
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