The Bihar Board has released the official BSEB Class 12th Maths provisional answer key on February 28, 2025. Candidates can check it at - objection.biharboardonline.com. Objections can be submitted online until 5:00 PM on March 5, 2025. Late submissions will not be considered as mentioned in an official notification released by the Bihar School Examination Board.
Download: Official BSEB 12th Maths Answer Key 2025 PDF Here
BSEB conducted the Class 12 Mathematics exam for both Science and Arts streams on February 4, 2025. The Bihar Board exam codes are 121 for Mathematics (I.Sc) and 327 for Mathematics (I.A).
Following the exam, various well-known institutions also published the unofficial answer keys for the Bihar Board 12 exam of Maths subject. The official Bihar 12th Maths answer key 2025 is now available for all sets. It contains answers to the objective questions asked in the exam.
The Bihar Board 12th maths answer key allows students to compare their answers with the correct solutions, estimate their scores, and raise objections if they find any discrepancies in the BSEB 12th answer key. They will find both the official and unofficial Class 12 maths Bihar Board 2025 answer key below:
Unofficial Bihar Board 12th Mathematics exam answer key link (SetA-J)
| Set A Maths Answer Key | Set B Maths Answer Key |
| Set C Maths Answer Key | Set D Maths Answer Key |
| Set E Maths Answer Key | Set F Maths Answer Key |
| Set G Maths Answer Key | Set H Maths Answer Key |
| Set I Maths Answer Key | Set J Maths Answer Key |
The board began its BSEB Class 12 theory exams on February 1, 2025. The Bihar Board Class 12 Mathematics exam was scheduled for the morning shift (9:30 am to 12:45 pm) on February 4th. Following the exam, various institutions release unofficial Bihar Board 12 answer keys. The BSEB has now published the official BSEB 12 answer key. Check the table below for BSEB maths answer key dates.
| Particulars | Dates |
|---|---|
Bihar 12th exam date for Maths | February 4, 2025 (9:30 am to 12:45 pm) |
BSEB Class 12 Maths answer key release date (unofficial) | February 4, 2025 |
Bihar Class 12 Maths answer key release date (official) | February 28, 2025 |

Get your results instantly with our calculator!
The Bihar Board has published official answer key. For instructions on how to access the official answer key PDF, check the steps below.
To learn how to check the answers in the Bihar Board 12th maths answer key, students can refer to this which explain the release process and guides checking their answers.
BSEB 12th Mathematics Answer Key 2024: Click Here
.png)
On Question asked by student community
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.
Hello Gulshan
Please check the link given below:
For Class 10: https://school.careers360.com/boards/bseb/bihar-board-10th-last-5-years-question-papers
For Class 12: https://school.careers360.com/boards/bseb/bihar-board-class-12-previous-years-question-papers-pdf-download
Hope it helps.
Hi!
Given below is the link to access the Bihar Board Class 12th English Question Paper:
https://school.careers360.com/boards/bseb/bihar-board-12th-english-question-paper-2026
Hope it helps!
Hello Arjun,
For the Bihar Board Class 11 Quarterly Exam Question Paper 2025, you can check the Careers360 resource below. The papers are available subject-wise for different streams and can help with practice, revision, and understanding the exam pattern.
Get Job Ready in Healthcare | Employability-Focused Programs