IB ACIO Answer Key 2025 Released for Tier 1 Exam. Check Responses

The Ministry of Home Affairs (MHA) has released the IB ACIO Answer Key 2025 for the Tier 1 exam on September twenty-two, 2025. Candidates can now check their responses and estimate scores before the final results are announced. The provisional answer key also allows candidates to raise objections until September twenty-five, 2025.

IB ACIO 2025 Tier 1 Exam Overview

The Intelligence Bureau Assistant Central Intelligence Officer (ACIO) Grade-II/Executive Tier 1 exam is a key recruitment test for candidates aspiring to join the IB. The Tier 1 exam was conducted on September 16, 17, and 18, 2025, and the answer key provides an opportunity to evaluate performance before results are declared. The following table summarises the essential details of the IB ACIO Tier 1 Answer Key 2025:

How to Download IB ACIO Tier 1 Answer Key 2025

Candidates can download the IB ACIO Tier 1 Answer Key PDF from mha.gov.in using their login credentials. The following steps guide the process:

1. Visit the official MHA website, mha.gov.in.
2. Locate the link for "IB ACIO Grade-II/Executive Answer Key 2025" in the Latest Updates section.
3. Click the link to access the login page.
4. Enter User ID/Registration Number and Password.
5. Download the response sheet and provisional answer key PDF for reference.

Candidates must keep a copy of the PDF for future verification and result calculation.

Details Included in IB ACIO Tier 1 Answer Key

The answer key contains all essential information to cross-check responses:

• Question ID: Unique number for each question.
• Correct Option ID: The official answer for the question.
• Option Marked by Candidate: The candidate’s selected option.

Raise Objections Against IB ACIO Answer Key

Candidates who find discrepancies in the provisional answer key can raise objections between September twenty-two and twenty-five, 2025. Valid proof or supporting documents must be submitted to challenge an answer. Steps to raise objections:

1. Log in to the MHA website with your credentials.
2. Click on the "Raise Objections" link.
3. Select the Question ID to challenge.
4. Provide detailed reasoning and upload supporting documents.
5. Pay the objection fee, if applicable, and submit the request.

IB ACIO Tier 1 Exam Marking Scheme

Candidates can estimate their scores using the marking scheme:

• Correct Answer: +1 mark
• Incorrect Answer: −0.25 mark
• Unattempted Question: 0 marks

Candidates can calculate their tentative score by comparing their answers with the IB ACIO Tier 1 Answer Key 2025.