Download IB ACIO Syllabus 2026 PDF with latest Exam Pattern, Tier 1 & Tier 2 syllabus, marking scheme & subject-wise topics. Check detailed IB ACIO Grade II syllabus, important topics, preparation tips and best books for success.

Overview :

The Intelligence Bureau (IB) has officially released the detailed syllabus for ACIO Exam 2026. Candidates preparing for the IB ACIO recruitment can download the official syllabus PDF, exam pattern, and marking scheme from this page. This comprehensive guide covers subject-wise topics, preparation strategy, and important books for the IB ACIO exam.

Exam Name	IB ACIO Exam 2026
Conducting Body	Intelligence Bureau (IB) – Ministry of Home Affairs
Post Name	Assistant Central Intelligence Officer (ACIO) Grade II/Executive
Exam Mode	Online (Tier 1), Offline (Tier 2)
Exam Type	Tier 1: Objective (MCQ) | Tier 2: Descriptive
Total Questions	Tier 1: 100
Total Marks	Tier 1: 100 | Tier 2: 50 | Interview: 100
Exam Duration	Tier 1: 1 Hour | Tier 2: 1 Hour
Negative Marking	Yes (0.25 marks in Tier 1)
Selection Process	Tier 1 + Tier 2 + Interview
Exam Language	English/Hindi
Official Website	mha.gov.in

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Exam Pattern :

Key Highlights of Exam Pattern:

Subject/Section	No. of Questions	Marks	Duration
Current Affairs	20	20	1 Hour
General Studies	20	20
Numerical Aptitude	20	20
Reasoning & Logical Aptitude	20	20
English Language	20	20
Total (Tier 1)	100	100

Important Points:

• Each correct answer carries 1 mark
• Negative marking: 0.25 marks deducted for each wrong answer
• No marks will be awarded for unattempted questions
• The question paper will be available in English and Hindi

IB ACIO Tier 2 Exam Pattern (Descriptive)

Section	Marks	Duration
Essay Writing	20	1 Hour
English Comprehension	10
Long Answer Questions (Current Affairs, Socio-Political, Economic Issues)	20
Total	50

Selection Process :

• Tier 1 + Tier 2 + Interview

Subject Wise Syllabus :

1. Current Affairs & General Awareness

• National & International Events (Last 6-12 months)
• Government Schemes & Policies
• Sports, Awards & Honours
• Science & Technology Developments
• Defence & Security News
• Books, Authors & Important Days
• Economy & Budget

2. General Studies

• Indian History (Ancient, Medieval & Modern)
• Indian Polity & Constitution
• Geography (Physical, Economic & Social)
• Indian Economy
• General Science (Physics, Chemistry, Biology)
• Environmental Issues & Ecology

3. Quantitative Aptitude (Numerical Ability)

• Number System, Simplification
• Percentage, Ratio & Proportion
• Profit & Loss, Simple & Compound Interest
• Time & Work, Time & Distance
• Average, Mensuration
• Data Interpretation (Tables, Graphs, Charts)
• Algebra & Geometry Basics

4. Reasoning & Logical Aptitude

• Analogies, Classification & Series
• Coding-Decoding, Blood Relations
• Puzzles & Seating Arrangements
• Syllogism, Statement & Conclusions
• Direction Sense, Order & Ranking
• Input-Output, Data Sufficiency
• Visual Reasoning

5. English Language

• Reading Comprehension
• Grammar (Tenses, Articles, Prepositions)
• Vocabulary (Synonyms, Antonyms, One Word Substitution)
• Error Detection & Sentence Correction
• Cloze Test, Fill in the Blanks
• Idioms & Phrases, Para Jumbles

Important Topics for Exam :

• Current Affairs: Last 6-12 months national & international events
• General Studies: Polity, History, Economy
• Reasoning: Puzzles, Seating Arrangements, Blood Relations
• Quantitative Aptitude: Data Interpretation, Percentage, Simplification
• English: Reading Comprehension, Error Detection

Check Full Syllabus: Latest Syllabus

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