Introduction:
The Intelligence Bureau Assistant Central Intelligence Officer (IB ACIO) exam is one of the most prestigious and competitive exams in India. It is conducted by the Ministry of Home Affairs (MHA) for recruiting officers in the Intelligence Bureau (IB). The role demands intelligence, presence of mind, and dedication to national security.
If you are planning to take the IB ACIO 2025 exam, this blog will guide you with every important detail — from eligibility to preparation tips — to help you succeed.
🔍 What is IB ACIO?
IB ACIO stands for Intelligence Bureau Assistant Central Intelligence Officer. It is a Grade-II, Group-C (Non-Gazetted, Non-Ministerial) post. Officers are primarily responsible for gathering intelligence, internal security, and counter-intelligence activities.
📋 IB ACIO 2025: Exam Highlights
| Feature | Details |
|---|---|
| Exam Name | IB ACIO (Grade-II) |
| Conducting Body | Ministry of Home Affairs (MHA) |
| Level | National |
| Post | Assistant Central Intelligence Officer |
| Vacancy (Expected) | 1000+ |
| Mode of Exam | Online (Computer Based) |
| Job Location | Across India |
| Salary (Level 7) | ₹44,900 – ₹1,42,400 (approx) |
✅ Eligibility Criteria
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Nationality: Indian citizen
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Age Limit: 18 to 27 years (age relaxation for reserved categories)
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Educational Qualification: Graduation in any stream from a recognized university
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Computer Proficiency: Basic computer knowledge is required
🧾 Exam Pattern
The IB ACIO exam is conducted in three stages:
1. Tier 1 (Objective Test)
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General Awareness – 20 Marks
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Quantitative Aptitude – 20 Marks
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Logical/Analytical Ability – 20 Marks
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English Language – 20 Marks
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General Studies – 20 Marks
Total – 100 Marks | Duration – 1 Hour
Negative Marking – 0.25 marks for each wrong answer
2. Tier 2 (Descriptive Test)
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Essay Writing (30 Marks)
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English Comprehension & Precis Writing (20 Marks)
Total – 50 Marks | Duration – 1 Hour
3. Interview
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100 Marks (Only for candidates who clear Tier 1 & Tier 2)
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Test of personality, mental awareness, and communication skills
📚 IB ACIO Syllabus Overview
General Awareness:
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Indian Polity, History, Geography
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Economy, Current Affairs
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Static GK, Awards, Defense, Science
Quantitative Aptitude:
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Number Series, Time & Work
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Percentage, Ratio & Proportion
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Profit & Loss, Speed & Distance
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Data Interpretation
Logical Reasoning:
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Coding-Decoding, Syllogism
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Blood Relation, Series
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Statement & Conclusion
English Language:
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Grammar, Vocabulary
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Error Spotting, Antonyms/Synonyms
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Cloze Test, Sentence Correction
Essay Topics (Tier 2):
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National Security, Women Empowerment, Technology
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Cybercrime, Social Media Impact, etc.
📌 How to Prepare for IB ACIO 2025?
1. Understand the Syllabus Thoroughly
Don’t waste time on irrelevant topics. Stick to IB-specific patterns.
2. Make a Realistic Study Plan
Study 4–6 hours daily, divided among all sections. Use weekly goals and revise regularly.
3. Use the Right Books
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General Awareness: Lucent GK, Daily Current Affairs (Newspaper or apps like GradeUp, Adda247)
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Quant & Reasoning: RS Aggarwal, Fast Track Objective Arithmetic
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English: Wren & Martin, Word Power Made Easy
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Essay Writing: Practice writing on trending topics and past years’ questions
4. Solve Previous Year Papers
Practice last 5 years’ papers. Understand trends and focus areas.
5. Attempt Mock Tests
Take online mock tests every week. Analyze your performance and work on weak areas.
6. Time Management is Key
Practice completing 100 questions in 60 minutes. Prioritize accuracy and speed.
🧠 Interview Preparation Tips
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Be confident and aware of current events
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Practice speaking on national issues and personal background
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Read editorials and stay updated with national security-related news
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Stay calm, honest, and professional during the interview
📎 Useful Links & Resources
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[Mock Test Portals: Testbook, GradeUp, Oliveboard]
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YouTube channels like Study IQ, Unacademy, Adda247
✍️ Final Thoughts
The IB ACIO exam is not just about cracking a paper; it’s about proving your dedication and sharp mind to serve the country. With a smart strategy, consistent practice, and the right resources, you can clear the IB ACIO 2025 exam in your first attempt.
Start early, stay consistent, and give your best. All the best, future officer! 🇮🇳