The Bihar Public Service Commission (BPSC) has released the final answer key for the Assistant Environmental Scientist Written (Objective) Competitive Examination held under Advertisement No. 88/2025. The exam was conducted on 11 June 2026, and the Commission has now published subject-wise final keys for General Studies (Paper-I) and all four optional subjects – Physics, Chemistry, Life Science, and Environmental Science (Paper-II). This article explains what changed from the provisional key, which questions were deleted, and how to download and use the final answer key PDFs.
BPSC Assistant Environmental Scientist Final Answer Key 2026 – Quick Overview
BPSC Assistant Environmental Scientist Final Answer Key 2026 – Important Dates
BPSC Assistant Environmental Scientist Final Answer Key 2026 – Download link
The BPSC Assistant Environmental Scientist Final Answer Key 2026 has been released for the written examination conducted under Advertisement No. 88/2025. Candidates can now download the subject-wise final answer keys for General Studies and their respective optional paper to verify responses, calculate probable scores, and check the revised answers after the objection review process.
How to Download the BPSC Assistant Environmental Scientist Final Answer Key
- Visit the official BPSC website: bpsc.bihar.gov.in.
- Open the “Advertisement” or “Notifications” section and locate Advt. No. 88/2025 – Assistant Environmental Scientist.
- Click the “Final Answer Key” link for the relevant paper.
- Download the General Studies (Paper-I) key, plus the key for the optional subject (Physics, Chemistry, Life Science, or Environmental Science) you actually appeared for.
- Identify your question-booklet series (A, B, C, or D) printed on your OMR/admit card and match it against the correct series column in the PDF.
- Save a copy of the PDF for your records before calculating your probable score.
Subject-Wise Final Answer Key Summary
Every paper carries 100 questions. The table below summarizes how many questions were deleted in the final key for each subject, based on the officially released PDFs.
Deleted & Reasoned Questions – Details by Subject
General Studies (Paper-I)
Question 1 in Series-A (corresponding to Q31 in Series-B, Q61 in Series-C, and Q81 in Series-D) has been marked “Deleted“ in the final key. No written reason is printed against this entry in the official document; all candidates will receive marks for this question.
Physics (Paper-II, Optional)
Three questions have been deleted in the final Physics key. Using Series-A numbering, these are Q87 (Series-B: 52, Series-C: 67, Series-D: 82), Q92 (Series-B: 57, Series-C: 72, Series-D: 87), and Q99 (Series-B: 64, Series-C: 79, Series-D: 94). The official PDF does not include a reason column for this subject, so no explanation is printed against these deletions.
Chemistry (Paper-II, Optional)
Question 6 in Series-A (Series-B: 21, Series-C: 36, Series-D: 1) has been deleted. The official reason states that the question contained a printing mistake in a chemical formula, which made the question ambiguous, so it has been dropped from evaluation for all candidates.
Life Science (Paper-II, Optional)
No question has been deleted in the Life Science final key. One answer (Series-A Q82) carries an added explanatory note on food-chain trophic levels – producers, primary/secondary consumers, and decomposers – to justify the chosen correct option, but the question itself stands and has not been dropped.
Environmental Science (Paper-II, Optional)
Two questions have been deleted:
- Series-A Q31 (Series-B: 46, Series-C: 11, Series-D: 26) – deleted because certain districts of Karnataka and Kerala have rainforest cover in addition to the option listed as fully rainforest, creating more than one correct option.
- Series-A Q46 (Series-B: 11, Series-C: 26, Series-D: 41) – deleted because the correct answer (an animal recognized as the symbol of the World Wildlife Fund) was not present among the listed options.
Two further answers carry explanatory notes without being deleted: one clarifies that decomposers hold the largest population share in a food chain, and another confirms that pH is a logarithmic function in the mathematical sense, supporting an Assertion-Reason type question.
How to Calculate Your Probable Score
Based on the recruitment notification for this post, the written exam consists of Paper-I – General Studies (100 marks) and Paper-II – Optional Subject (300 marks), with 0.33 marks (1/3) deducted for every wrong answer. To estimate your score:
- Note your question-booklet series (A/B/C/D) from your admit card.
- Match each of your recorded responses against the correct answer in that series column of the final key.
- Award full marks for every correct match.
- Deduct 0.33 marks for every incorrect match.
- Treat questions marked “Deleted” as correct for all candidates, regardless of the option chosen or left unattempted.
Important Instructions
- The released document is the final answer key, issued after review of objections raised against the provisional key (objection window: 08 July 2026 to 12 July 2026).
- Match your answers only against the series (A/B/C/D) printed on your own question booklet – answers differ by series even though the underlying questions are the same.
- Questions marked “Deleted” are treated as correct for every candidate and do not require any action from candidates.
- Download the General Studies key along with only the optional subject you actually appeared for.
- Refer to the official BPSC website for the result date and further updates, as this is not mentioned in the final answer key documents.
BPSC Assistant Environmental Scientist Final Answer Key 2026 – Important Links