Syllabus

IB ACIO Syllabus 2025 & Exam Pattern | Tier 1 & Tier 2 Topics Explained

Get the complete IB ACIO 2025 syllabus and exam pattern – Tier 1 (General Awareness, Quant, Reasoning, English, General Studies) and Tier 2 descriptive topics (Essay, Comprehension & Precis). Includes detailed section-wise breakdown and preparation tips.

The IB ACIO Grade II/Executive is a Group C, non-gazetted, non-ministerial post in the Intelligence Bureau. The IB operates under the Ministry of Home Affairs, making this position both prestigious and sensitive. Candidates recruited through this exam are expected to handle intelligence gathering, surveillance, coordination, and security matters across India.

Due to the competitive nature of the exam, understanding the syllabus in-depth is the first step to success.

IB ACIO 2025 Exam Overview

Feature Details
Post Name Assistant Central Intelligence Officer Grade II/Executive
Organization Intelligence Bureau (IB)
Conducting Authority Ministry of Home Affairs (MHA)
Exam Stages Tier 1 (Objective), Tier 2 (Descriptive), Interview
Tier 1 Mode Online (MCQ-based)
Tier 2 Mode Offline (Descriptive)
Tier 1 Duration 1 Hour
Tier 2 Duration 1 Hour
Tier 1 Marks 100 Marks
Tier 2 Marks 50 Marks
Interview Marks 100 Marks
Negative Marking 0.25 marks for each wrong answer in Tier 1

IB ACIO Tier 1 Syllabus 2025 (Subject-Wise Topics & Topic Details)

1. General Awareness (20 Marks)

Topics Topic Details
Current Affairs Events of national and international importance in the last 6–8 months
Indian Polity Constitution, Parliament, Fundamental Rights, Political Institutions
History Ancient, Medieval, Modern History, and Freedom Movement
Geography Physical and political geography, climate, rivers, resources
Economy Indian economy, budget, inflation, planning, financial institutions
Static GK National symbols, capitals, currencies, awards, books
Science & Technology Basics of physics, chemistry, biology, computer, IT

2. Quantitative Aptitude (20 Marks)

Topics Topic Details
Number System HCF, LCM, divisibility, simplification
Percentages Basic percentage calculations, applications
Profit & Loss Cost price, selling price, profit/loss %, discounts
Ratio & Proportion Partnership, mixtures, basic ratio problems
Interest Simple and compound interest problems
Time & Work Work efficiency, pipes & cisterns
Speed, Time & Distance Boats, trains, average speed
Data Interpretation Pie charts, bar graphs, tables

3. Logical, Analytical & Numerical Ability (20 Marks)

Topics Topic Details
Coding-Decoding Pattern-based word or number transformations
Blood Relations Family-based logical reasoning questions
Direction Sense Map-based problems with directions
Syllogism Logic using Venn diagrams
Series Number, alphabetic, mixed series
Puzzles Seating arrangement, floor-based, classification puzzles
Statements & Conclusions Deductive reasoning and logical conclusion

4. English Language (20 Marks)

Topics Topic Details
Grammar Tenses, prepositions, articles, subject-verb agreement
Vocabulary Synonyms, antonyms, idioms, one-word substitution
Error Spotting Grammar-based error identification
Cloze Test Fill-in-the-blanks passage
Reading Comprehension Factual and inferential questions based on passage
Para Jumbles Rearranging sentences to form a meaningful paragraph

5. General Studies (20 Marks)

Topics Topic Details
Environmental Studies Ecology, climate change, biodiversity
Indian Society Social issues, culture, demographics
Scientific Developments Latest in space, tech, defense (ISRO, DRDO)
Government Schemes Recent schemes, their features, and purpose
Miscellaneous UN bodies, census, Indian constitution amendments

IB ACIO Tier 2 Syllabus 2025 (Descriptive Paper)

1. Essay Writing (30 Marks)

Topics Topic Details
Internal Security Terrorism, cybercrime, border security
Governance Transparency, e-Governance, RTI, reforms
Social Issues Education, gender equality, corruption
Development Economic growth, digital initiatives, self-reliance

2. English Comprehension & Precis Writing (20 Marks)

Section Topic Details
Comprehension Read and answer questions based on passage
Precis Write a concise summary of a given paragraph
Grammar Sentence structuring and clarity

IB ACIO Syllabus PDF Download

You can download the official IB ACIO 2025 Syllabus PDF once released from the MHA site.

Click Here to Download IB ACIO Syllabus PDF

Recommended Books for IB ACIO 2025

Subject Book Title Author/Publisher
General Awareness Lucent’s GK Lucent
Quantitative Aptitude Quantitative Aptitude R.S. Aggarwal
Reasoning Analytical Reasoning M.K. Pandey
English Objective General English S.P. Bakshi
Essay 151 Essays S.C. Gupta
Current Affairs Pratiyogita Darpan PD Group
General Studies NCERT Books (Class 6–12) NCERT

Preparation Tips for IB ACIO

  • Know the Exam Pattern: Understand Tier 1 & Tier 2 clearly.
  • Current Affairs Daily: Follow newspapers and monthly compilations.
  • Practice Essays: Choose topics from national issues and write weekly.
  • Mock Tests Weekly: Simulate real exam conditions.
  • Revise Regularly: Use flashcards or notes for formulas and GK.
  • Previous Year Papers: Identify trends and commonly asked topics.

Specialization & Promotion in IB ACIO

Career Stage Specialization / Role
ACIO-II Field assignments, surveillance, reporting
ACIO-I Coordination roles, data analysis
DCIO Technical and operational strategy
Assistant Director Team management, inter-agency liaison
Joint/Additional Director Strategic policy, national intelligence

Conclusion

The IB ACIO Syllabus 2025 includes a broad range of topics, from reasoning and quantitative aptitude to essays and national issues. A deep understanding of each subject and smart preparation is crucial for cracking this highly competitive exam.

Stay updated with current events, revise concepts, and solve practice papers regularly to ensure success.

FAQs on IB ACIO Syllabus 2025

  • Q1. Is there any sectional cutoff in IB ACIO?
    A: No official sectional cut-off, but overall merit depends on total score.
  • Q2. What is the minimum qualification for IB ACIO?
    A: A graduation degree in any discipline from a recognized university.
  • Q3. Is the IB ACIO job transferable?
    A: Yes, it’s a central government job with all-India service liability.
  • Q4. Is it mandatory to qualify both Tier 1 and Tier 2?
    A: Yes. Only those who clear both are shortlisted for the interview.
  • Q5. How many attempts are allowed for IB ACIO?
    A: There is no attempt limit; however, age limits (18–27 years) apply.

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