Assistant Environmental Scientist (AES)
The Bihar Public Service Commission (BPSC) has released the Assistant Environmental Scientist (AES) Answer Key 2026 for Advertisement No. 88/2025 on 8 July 2026. The written exam was held on 11 June 2026 for 17 posts, and the objection window is open from 8 July 2026 to 12 July 2026. Download the subject-wise answer keys from the official link in the Important Links section below and match your answers.
| Application Begin | 27 August 2025 |
| Last Date to Apply Online | 19 September 2025 |
| Last Date for Fee Payment | 19 September 2025 |
| Admit Card Available | 4 June 2026 |
| Written Exam Date | 11 June 2026 |
| Answer Key Released | 8 July 2026 |
| Objection Window Opens | 8 July 2026 |
| Objection Window Closes | 12 July 2026 |
| General / BC / Other State | Rs. 100 |
| SC / ST / PH (PwD) | Rs. 100 |
| Female (Bihar Domicile) | Rs. 100 |
⚠️ KadamSetu is a private information site, not a government body — every detail here is verified against the official source (linked on each item above) and date-stamped. Cross-check the final details on the official notice, and never pay anyone to apply. Your personal scorecard / marks stay on the official login; we never host those.
- 8 Jul 2026 Answer key published
BPSC AES Answer Key 2026 - Overview
The Bihar Public Service Commission (BPSC) is the state body that hires officers for the Government of Bihar. It has released the answer key for the Assistant Environmental Scientist (AES) written exam held under Advertisement No. 88/2025. The exam took place on 11 June 2026, and BPSC displayed the provisional answer key on its website from 8 July 2026. This recruitment fills 17 posts in the Environment, Forest and Climate Change Department of Bihar.
An answer key is the official list of correct answers for each question in the exam. Using it, you can match your responses, add up your likely marks, and get a fair idea of your score well before the final result. BPSC has released a separate answer key for General Studies (Paper-I) and for each optional subject in Paper-II - Physics, Chemistry, Life Science, and Environmental Science.
Vacancy Details (Advt No. 88/2025)
BPSC announced a total of 17 vacancies for the Assistant Environmental Scientist post. The category-wise split is given below.
| Category | Number of Posts |
|---|---|
| UR (Unreserved / General) | 7 |
| EWS (Economically Weaker Section) | 2 |
| EBC (Extremely Backward Class) | 3 |
| BC (Backward Class) | 2 |
| SC (Scheduled Caste) | 2 |
| ST (Scheduled Tribe) | 1 |
| Total | 17 |
How to Download the BPSC AES Answer Key 2026
- Open the official BPSC website using the Official Website link in the Important Links section above.
- Go to the "Notices" or "Answer Key" area on the home page.
- Find the notice for Advertisement No. 88/2025, Assistant Environmental Scientist.
- Click the answer key for your paper - General Studies, Physics, Chemistry, Life Science, or Environmental Science.
- The PDF will open. Download it and save a copy for your record.
You can also open each subject answer key directly from the Important Links table above.
How to Raise an Objection
If you feel any answer in the provisional key is wrong, BPSC lets you file an objection. The objection window is open from 8 July 2026 to 12 July 2026. Log in to the BPSC dashboard with your username and password, and upload your objection along with valid supporting proof. BPSC charges Rs. 250 per question as the objection fee. Read the official Objection Notice (linked in the Important Links table above) for the exact steps. Keep your proof or reference source ready, because BPSC accepts an objection only when it is backed by a valid source. After 12 July 2026, the commission reviews every objection and then publishes the final answer key.
Eligibility (Quick Recap)
To apply for this post, a candidate needed a Post Graduate degree in Chemistry, Biology (Life Science), Environmental Science, or Physics from a recognised university. Age was counted as on 1 August 2025: minimum 21 years and maximum 37 years for men. Women candidates and reserved categories received age relaxation as per Bihar government rules - for example, the upper age limit for women was 40 years. The full eligibility is given in the official notification linked above.
Exam and Fee Snapshot
The application fee for all categories was Rs. 100, paid online. The written exam was an offline (pen-and-paper) test held on 11 June 2026, and the admit card was released earlier on 4 June 2026. With the provisional answer key now out, the next big step is the objection review, followed by the official written exam result.
What Happens Next
Here is the road ahead for BPSC AES 2026 candidates:
- Match your answers with the released answer key and estimate your score.
- File an objection between 8 July and 12 July 2026 if any answer looks wrong.
- BPSC reviews every objection and issues the final answer key.
- The commission then declares the written exam result and merit list.
Keep checking the official BPSC website for the final answer key and result. We update this page as soon as BPSC posts each new notice.
❓ Frequently Asked Questions
Has BPSC released the AES Answer Key 2026?
Yes. BPSC displayed the Assistant Environmental Scientist (AES) provisional answer key on its website from 8 July 2026 for Advertisement No. 88/2025. You can download it from the official link in the Important Links table above.
How many posts are in this BPSC AES recruitment?
There are 17 posts of Assistant Environmental Scientist under Advertisement No. 88/2025.
When was the BPSC AES written exam held?
The written exam was held on 11 June 2026.
Which subject answer keys are available?
BPSC has released answer keys for General Studies (Paper-I) and for Physics, Chemistry, Life Science, and Environmental Science (Paper-II). Each one is linked separately in the Important Links table above.
How can I download the BPSC AES answer key?
Open the official BPSC website or the answer key link in the Important Links table above, find the Advertisement No. 88/2025 notice, click your subject paper, and download the PDF.
How do I raise an objection against an answer?
BPSC accepts objections from 8 July 2026 to 12 July 2026. Log in to the BPSC dashboard with your username and password, upload your objection with valid proof, and pay Rs. 250 per question as the objection fee. Read the official Objection Notice linked in the Important Links table for the full process.
What is the last date to raise an objection?
You can upload objections on the BPSC dashboard until 12 July 2026. Objections sent after this date, or by any other means, will not be considered.
When will the BPSC AES result be declared?
BPSC will first review all objections and publish the final answer key. The written exam result and merit list follow after that. Keep checking the official BPSC website for updates.