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The IB ACIO Answer Key 2025 official Tier 1 online exam has been made available on 22nd September 2025. The applicants who took the test can now verify their answers and estimate their possible scores. The response sheet and answer key are published on the official website of the Ministry of Home Affairs (MHA) mha.gov.in. Moreover, contestants can file objections about any differences in the answer key until 25th September 2025.
This article is a full guide on downloading the IB ACIO Answer Key 2025, marking calculations, questioning answers, and knowing the subsequent steps for the selection.
IB ACIO Tier 1 Final Answer Key 2025 Date
IB ACIO Tier 1 Provisional Answer Key 2025 came out on 22 September 2025. The opportunity to raise objections was provided to the candidates within the given timeframe. Following scrutiny of all objections and submissions, the Final Answer Key shall be uploaded together with the official result. Marks secured by the candidates will be computed strictly on the Final Answer Key to ensure fairness as well as accuracy of assessment. Candidates may compare their answers to the final key in order to approximate their scores once results are announced. The final key is the end of the answer key procedure.
IB ACIO Answer Key 2025 Released
The IB ACIO Answer Key 2025 has been released officially by the Ministry of Home Affairs (MHA) on 22nd September 2025. Aspirants who have taken part in the Tier 1 Exam conducted from 16th to 18th September 2025 can now download the official answer key and response sheet from www.mha.gov.in
via their registration ID and Date of Birth. The answer key enables candidates to verify correct answers, estimate likely scores, and evaluate performance prior to results. Objections may be filed online within the given timeframe, and the final answer key shall be published upon examination of all objections.
| Feature | Details |
|---|---|
| Exam Name | IB ACIO Grade-II/Executive Tier 1 |
| Conducting Body | Ministry of Home Affairs (MHA) – Intelligence Bureau (IB) |
| Exam Dates | 16th, 17th & 18th September 2025 |
| IB ACIO Answer Key Release Date | 22nd September 2025 |
| IB ACIO Objection Window | 22nd to 25th September 2025 |
| Official Website | mha.gov.in |
| Login Credentials | Registration ID & Password/Date of Birth |
IB ACIO Answer Key 2025 Download Link
IB ACIO Answer Key 2025 download link is available on the official website of Ministry of Home Affairs (MHA). The answer key and response sheet can be accessed by the candidates from www.mha.gov.in by logging in using their IB ACIO registration ID and Date of Birth. It enables candidates to cross-check answers, make an estimate of likely scores, and raise objections online within the specified time frame before the final key is available.
How to Download IB ACIO Answer Key 2025?
Candidates can download the IB ACIO Tier 1 Answer Key 2025 by following these simple steps:
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Visit the official website: mha.gov.in.
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On the homepage, go to the “What’s New” section.
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Click on the link – “IB ACIO Answer Key 2025 (Tier 1)”.
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Enter your User ID and Password/Date of Birth.
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The answer key and response sheet will appear on the screen.
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Download and take a printout for reference.
How to Calculate Marks Using IB ACIO Answer Key 2025?
The IB ACIO Tier 1 Examination 2025 comprises 100 objective-type questions where each correct answer carries 1 mark and there is 0.25 mark negative marking for each wrong answer.
Total Marks = (Correct Answers × 1) – (Wrong Answers × 0.25)
Example:
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Correct Answers: 70
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Wrong Answers: 20
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Marks = (70 × 1) – (20 × 0.25) = 70 – 5 = 65 marks
This calculation gives candidates a fair idea of their IB ACIO Tier 1 Result 2025 before the official declaration.
IB ACIO Answer Key 2025 Objection Process
IB ACIO Provisional Answer Key 2025 will be made available for challenge. The candidates who notice discrepancies can raise objections through the official website.
- Visit mha.gov.in.
- Click on the IB ACIO Answer Key 2025 Objection Link.
- Log in with your registration number and password.
- Select the question(s) and submit your objection with valid proof.
- Pay the objection fee (if applicable).
Example of Objection Submission
Suppose a candidate believes that Question 42 in the Reasoning section has multiple correct answers. The candidate can:
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Select Question 42 for challenge.
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Upload documentary proof or reference from standard books or government sources.
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Pay the objection fee and submit online.
After review, if the objection is accepted, the final answer key will be corrected, and the candidate’s score may be updated accordingly.
What’s Next After IB ACIO Answer Key 2025?
Once the answer key is released and objections are resolved, the recruitment process will move forward:
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IB ACIO Final Answer Key 2025 – After objections are checked.
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IB ACIO Result 2025 – Candidates shortlisted for Tier 2.
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IB ACIO Tier 2 Exam – Descriptive paper (Essay & Comprehension).
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Interview Round – For final selection.
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Final Merit List – Based on Tier 1, Tier 2, and Interview.
Tips for Candidates After Answer Key Release
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Cross-Check Answers Carefully: Compare your responses with the official answer key to identify correct and incorrect answers.
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Calculate Probable Score: Use the marking scheme formula to estimate your score.
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Decide on Objections: Only raise objections with valid proof to avoid unnecessary fee loss.
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Prepare for Tier 2: Start preparing for the descriptive Tier 2 exam while waiting for Tier 1 results.
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Document Proofs: Maintain references from reliable sources for any future queries or verification.

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