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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 |

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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
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Frequently Asked Questions (FAQs)
The Bihar School Examination Board (BSEB) has released the official answer key on February 28, 2025.
The official Bihar Board 12 answer key is available for download on the official BSEB website: objection.biharboardonline.com or secondary.biharboardonline.com.
On Question asked by student community
Hello students,
Hello students! Yes, Bihar Board Class 11 Science Half-Yearly Question Papers 2025–26 are available on Careers360. You can download the Physics, Chemistry, Maths and Biology papers from the link below.
https://school.careers360.com/boards/bseb/bihar-board-class-11-half-yearly-question-paper-2025-26
Dear Student,
For the Bihar Board Class 11 previous-year question papers, Careers360 provides the 2026 subject-wise question papers for Science, Commerce, and Arts streams, along with answer keys where available.
You can check and download them here: Bihar Board Class 11 Question Papers 2026
Hello Abhi
Please check the link given below for last year's Bihar Board question papers:
https://school.careers360.com/boards/bseb/bihar-board-12th-question-papers-2026
Hope it helps.
Keep posting your doubts here for more concept explanations, practice questions, and exam tips.
Dear Student,
If you are looking for the last 5 years’ Bihar Board question papers, Careers360 provides subject-wise previous-year question papers in PDF format. The available resources cover 2025, 2024, 2023, 2022 and 2021, along with solutions for several subjects.
You can check the question papers here:
Dear Student,
Bihar Board Class 11 exams ki dates school/board schedule ke anusaar jari hoti hai. Arts stream ke exact subject-wise dates ke liye latest Bihar Board Class 11 exam date updates par check karein. Bihar Board Class 11th Time Table 2027
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