IB ACIO Syllabus 2025, Exam Pattern For Tier 1 and Tier 2 Exam

The Ministry of Home Affairs (MHA) is going to conduct the IB ACIO Exam 2025 for ACIO Grade-II Executive. There are three examination stages and to succeed in the exam, candidates need to understand the IB ACIO Syllabus 2025, which is categorised into five sections: General Studies, Current Affairs, Quantitative Aptitude, Reasoning, and English.

So, start your preparation for this prestigious Government Job today and go through the latest IB ACIO Exam Pattern and Syllabus for Tier 1, Tier 2, and Tier 3 stages mentioned below.

IB ACIO Syllabus 2025

IB ACIO Exam aims to select eligible candidates for posting at the Intelligence Bureau of India, and this year, the total vacancy is 3,717. Candidates appearing for this exam have to prepare for both the objective and descriptive papers and strengthen their knowledge base in the subjects mentioned above. The syllabus for the IB ACIO Exam is not very vast, but it requires conceptual clarity and proper management of the questions.

Highlights of IB ACIO Exam Pattern and Syllabus

For a clearer understanding, candidates can also refer to the highlights provided in the table below.

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IB ACIO Exam Pattern 2025

The IB ACIO Written Exam will be held in two phases: Tier I (Objective) and Tier II, (Descriptive). Candidates who will qualify for the Tier 1 and Tier 2 exams will be further called for the Interview round. After all the stages, the final merit list will be prepared, and selected candidates will be given the chance to join the Intelligence Bureau of India as Assistant Central Intelligence Officers.

IB ACIO Tier 1 Exam Pattern

• The IB ACIO Tier I Exam is a Written Exam of 100 Marks.
• For every wrong answer, there will be a negative marking of 1/4 mark.
• The Exam is Objective in nature and consists of MCQs.
• There are five subjects included in the Tier-1 exam.
• The time duration for this exam is 60 minutes.

IB ACIO Tier 2 Exam Pattern

• The phase 2 exam is descriptive.
• The paper is divided into two sections: Essay Writing and English Comprehension.
• The total mark for this paper is 50 marks.
• The exam duration is 60 minutes.

IB ACIO Tier 1 Syllabus 2025

There are five main topics in the IB Assistant Central Intelligence Officer 2025 Tier 1 exam. These are:

• General Studies (20 Qs, 20 Marks)
• Numerical Ability (20 Qs, 20 Marks)
• English Language (20 Qs, 20 Marks)
• Quantitative Aptitude (20 Qs, 20 Marks)
• Current Affairs: National and International Current Affairs. (20 Qs, 20 Marks)

General Studies Syllabus

Check the IB ACIO General Studies Syllabus in the table below, which includes topics like History, Geography, Polity, and others.

Numerical Ability & Reasoning Syllabus

The detailed topic-wise Syllabus has been tabulated below.

English Language Syllabus

English is one of the easiest sections to score. The IB ACIO English Language Syllabus has been tabulated below for the convenience of the candidates.

Quantitative Aptitude Syllabus

The Quantitative Aptitude section, if practised well, can be one of the easiest and best-scoring sections in the IB ACIO Exam. Check the detailed Syllabus for Quantitative Aptitude in the table below.

IB ACIO Tier 2 Syllabus

The IB ACIO Tier 2 is a descriptive paper, comprising an Essay Writing section (20 marks) and an English Comprehension and Precis Writing section (30 marks). The topics for the Essay will be based on current affairs or any other news-related topics. Candidates can go through the IB ACIO Previous Year to get an idea of the Syllabus or topic for Tier 2. However, the most important topics are:

1. Current Affairs
2. Economics
3. Socio-Political Issues

IB ACIO Interview 2025

Candidates who will clear the cut-off for Phases 1 and 2 of the IB ACIO Exam will be called for the final stage of selection which is the IB ACIO Interview 2025. The Interview is held for 100 marks. The interview aims to assess the candidate’s suitability for a career in the Intelligence Bureau and evaluates the candidate’s personality, communication skills, and overall demeanor.

IB ACIO Selection Process 2025

The IB ACIO 2025 selection process involves three stages: Tier 1, Tier 2, and Tier 3 (Interview). Candidates are required to qualify in each stage to progress to the next, and the final selection is determined by their cumulative performance and overall suitability for the position.

Important Note:

• Candidates will be shortlisted for Tier-II based on their performance and normalised marks in Tier-I. Around 10 times the number of total vacancies will be selected.
• Based on combined scores in Tier-I and Tier-II, candidates will be shortlisted for Tier-III (Interview) at 5 times the number of vacancies. To qualify for the interview, candidates must score at least 33% marks (17 out of 50) in Tier-II.
• The final merit list will be prepared based on the total marks obtained in Tier I, Tier II, and Tier III (Interview), according to the number of available vacancies.

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