The Bihar Public Service Commission (BPSC) has released the provisional answer key for the Mineral Development Officer (MDO) 2025 examination. This is an important update for candidates who appeared in the recruitment test, as the answer key allows them to evaluate their performance and calculate expected scores before the official results are declared.
Publishing an answer key ensures transparency in the recruitment process and provides candidates with an opportunity to check whether the questions have been evaluated correctly. If any candidate finds an error or discrepancy in the provisional answer key, they are allowed to raise objections within the prescribed timeline. Once all objections are reviewed, the Commission will release the final answer key, which will form the basis for the declaration of results.
Event |
Date |
Application Start Date |
23 May 2025 |
Last Date for Apply Online |
16 June 2025 |
Pay Exam Fee Last Date |
16 June 2025 |
Exam Date Available |
09,10 August 2025 |
Admit Card |
06 August 2025 |
Answer Key |
27 August 2025 |
Application Fee :
Category |
Amount |
General / OBC / EWS |
₹750/- |
SC / ST / PH Candidates |
₹200/- |
All Female Candidates (Only from Bihar) |
₹200/- |
Payment Methods |
Pay online using a Debit Card, Credit Card, Net Banking, IMPS, Cash Card, Mobile Wallet |
Age Limit:
Criteria |
Age |
Minimum Age |
21 Years |
Maximum Age |
42 Years |
Note: Age Relaxation as per rules
Vacancy Details
Post Name |
Total Posts |
Qualification |
Mineral Development Officer |
15 |
-A second-class M.Sc. in Geology or Applied Geology -An M.Tech. in Geology -A Bachelor’s degree in Mining Engineering |
How to Download the Bihar BPSC MDO 2025 Answer Key
Candidates can download the answer key by following these simple steps:
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Visit the official BPSC website (bpsc.bih.nic.in).
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On the homepage, look for the link titled “BPSC Mineral Development Officer (MDO) 2025 Answer Key” under the latest updates section.
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Click on the link to open the PDF file containing the provisional answer key.
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Download the PDF and take a printout for easy reference.
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Match your responses with the official answers to calculate your expected marks.
How to Calculate Your Expected Score
To estimate your marks, candidates should follow the official marking scheme:
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Award yourself +1 mark for every correct answer.
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Deduct marks for wrong answers if there is negative marking (check the exam notification for details).
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No marks should be added or deducted for unanswered questions.
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The total score obtained after this calculation will give a rough estimate of your performance.
Steps to Raise Objections Against the Provisional Answer Key
BPSC provides an opportunity for candidates to challenge the provisional key if they believe any question or answer is incorrect. The process usually involves online objection submission. Here’s how you can proceed:
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Visit the BPSC official portal and log in with your credentials (Registration Number and Password/Date of Birth).
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Go to the “Objection Submission” section for the MDO 2025 examination.
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Select the question(s) you wish to challenge and upload supporting documents or references.
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Pay the required objection fee, if applicable.
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Submit the objection before the last date. Late submissions will not be considered.
Candidates are advised to carefully check the objection guidelines, as objections without proper references from standard textbooks or authentic sources may be rejected.
What Happens After Objections?
Once the objection window closes, the Commission will review all submitted queries with the help of subject matter experts. If a discrepancy is found valid, corrections will be made. After this, the final answer key will be published. The final key is binding and will be used to prepare the merit list and results.
Expected Cut-Off and Result Declaration
Although the official cut-off will only be released with the results, candidates can predict their chances by comparing their expected marks with previous years’ cut-off trends. Generally, the cut-off depends on:
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Number of candidates who appeared in the exam
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Difficulty level of the paper
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Number of vacancies released by BPSC
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Overall performance of aspirants
The BPSC MDO 2025 result is expected soon after the release of the final answer key. Candidates should regularly check the official website for updates.
Tips for Candidates
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Keep documents ready: Maintain a copy of your admit card, application form, and exam paper for reference while checking the key.
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Verify carefully: Don’t rush while matching answers. Double-check your marked responses.
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Use authentic sources: If raising objections, always back your claim with reliable references.
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Prepare for next stages: Don’t wait for the result announcement—start brushing up for interviews or document verification.