The Ministry of Home Affairs (MHA) has released the Intelligence Bureau (IB) ACIO Phase 1 Answer Key 2025 today, September 22. Candidates who appeared for the Assistant Central Intelligence Officer (ACIO) exam can now check the provisional answer key on the official website, mha.gov.in.

The answer key comes as a PDF and lists all the question numbers along with the correct answer options.

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IB ACIO answer key: How to check

  1. Visit the Ministry of Home Affairs website: www.mha.gov.in
  2. Go to the ‘Notifications’ or ‘Latest Updates’ section.
  3. Look for the link titled “IB ACIO Phase 1 Answer Key 2025”.
  4. Click the link and log in using your Registration ID/User ID and Password (you may also need your Date of Birth).
  5. View your response sheet and download the PDF.
  6. Compare your answers with the official answer key to estimate your score.

Candidates should note that the released answer key is provisional. Those who appeared for the exam have the chance to challenge any answer if they believe it is incorrect. After the challenge period ends, a panel of experts will review all submitted objections and make corrections where they find the challenges valid.

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It is important to remember that objections submitted without proper evidence or after the deadline will not be considered. Once this process is complete, a final answer key will be published, and the final scores will be calculated based on it.