BSEB Half-Yearly Exam Answer Keys for Class 9, 10, 12 released: mandatory for 2027 annual exams

In short

The Bihar School Examination Board (BSEB) released the Half-Yearly Exam Answer Key on 19 September 2026 for classes 9, 10, and 12.
Half-Yearly examinations for classes 9, 10, and 12 are scheduled from 18 September to 26 September 2026.
Participation and a passing grade in these exams are mandatory for students to be eligible for the annual examination in 2027.
The official website for downloading the answer key is biharboardonline.com.
The final annual examination for Inter (Class 12) is scheduled to take place between 01 February and 12 February 2027.

The Bihar School Examination Board (BSEB) released the Half-Yearly Exam Answer Key on 19 September 2026. This release covers subjects for classes 9, 10, and 12, coinciding with the ongoing Half-Yearly examinations across Bihar.

biharboardonline.com homepage — Official website: biharboardonline.com

These examinations, scheduled from 18 September to 26 September 2026, serve as a preparatory assessment for students. Participation and a passing grade are mandatory for eligibility in the annual examination in 2027, according to the BSEB.

Examination Structure and Schedule

The Half-Yearly examinations are being conducted in an offline mode, with two sittings daily. The first off sitting runs from 09:30 AM to 12:45 PM, and the second sitting is from 02:00 PM to 05:15 PM. Students are allotted a 15-minute ‘Cool Off Time’ during the examination.

Question papers for these exams were prepared and dispatched by the board to schools and colleges through a confidential agency between 07 September 2026 and 15 September 2026. The Class 12th Half-Yearly examination will be conducted in a manner similar to the final examination, with question papers prepared and sent by the board, as stated by Dr. Tyag Rajan Sam M.

Bihar Board Half-Yearly Exam Schedule 2026
Date of Examination	Class 9 Morning Shift (9:30 AM–12:45 PM)	Class 9 Afternoon Shift (2 PM–5:15 PM)	Class 10 Morning Shift (9:30 AM–12:45 PM)	Class 10 Afternoon Shift (2 PM–5:15 PM)	Class 11 1st Sitting (09:30 AM to 12:45 PM)	Class 11 2nd Sitting (02:00 PM to 05:15 PM)	Class 12 Morning Shift (9:30 AM–12:45 PM)	Class 12 Afternoon Shift (2 PM–5:15 PM)
September 18, 2026	NA	NA	NA	NA	Physics, Entrepreneurship, Philosophy	Chemistry, Accountancy, Political Science	Physics, Entrepreneurship, Philosophy	Chemistry, Accountancy, Political Science
September 21, 2026	Hindi, Bangla, Urdu, Maithili	Sanskrit, Hindi, Arabic, Farsi, Bhojpuri	Hindi, Bangla, Urdu, Maithili	Sanskrit, Hindi, Arabic, Farsi, Bhojpuri	Mathematics	Biology, Business Studies, Geography	Mathematics	Biology, Business Studies, Geography
September 22, 2026	Science, Music	Social Science	Science, Music	Social Science	English	Hindi	English	Hindi
September 23, 2026	Mathematics, Home Science	English	Mathematics, Home Science	English	NA	NA	Urdu, Maithili, Sanskrit, Prakrit, Arabic, Pali, Persian, Bangla, Bhojpuri, Magahi	Psychology

Answer Key Access and Examination Details

The Half-Yearly Exam Answer Key for the 2026-27 session is available for Class 9, 10, and 12 subjects. Specifically, the 12th Chemistry Half Yearly Exam Answer Key 2026, covering questions 1-50, is available on biharboard.co and is applicable for the 2025-27 session. Answer keys for Class 9th half-yearly exams have also been made available.

Students can download the answer key from the official website, biharboardonline.com. The Half-Yearly exam is a 100-mark examination. For the 12th Half-Yearly exam, students are required to answer 50 objective questions out of 80 provided, plus 50 marks of subjective questions. The 12th Chemistry Half Yearly Exam was held on 18 September 2026.

Significance for Annual Examinations

The Half-Yearly examination serves as a preparatory assessment for students, indicating their readiness for the annual examination in 2027 and familiarizing them with the board’s question pattern. The final annual examination for Inter (Class 12) is scheduled to take place between 01 February and 12 February 2027.

The Bihar School Examination Board (BSEB) provides thorough Bihar Board Text Books Solutions for classes 1 to 12, available in both Hindi and English Medium. The syllabus for all classes is prescribed by the State Government of Bihar, with new (2022-2023) Edition of SCERT BTBC Bihar Board Books also available for free PDF download.

Nishit Kumar is a senior EdTech industry leader with over a decade of experience in building and scaling education platforms, shaping their product, content, and growth strategy. At FindMyCollege, Nishit oversees content and editorial strategy, guiding topic selection and content frameworks to ensure accuracy, relevance, and student-first value across the website.

View all posts →