Ministry of Home Affairs, Government of India conducts and recruits the eligible aspirants for post of Assistant Central Intelligence Officers (ACIO) in Intelligence Bureau (IB) every year.

There are two parts in Assistant Central Intelligence Officers in Intelligence Bureau Examination such as:

Objective Part
Descriptive Part

IB ACIO Objective syllabus

The objective test consists of 100 questions carrying 1 mark each. The test consists of following 4 sections:

English Comprehension
General Awareness/General Knowledge
Reasoning
Mathematical Ability

English Comprehension:

Antonyms & Synonyms
Word Meanings
Closest related meanings
Grammar
One word substitution
Jumbles sentences
Idioms & Phrases
Passage

English Language Test

General Awareness/General Knowledge:

Some sections will be covered in this:

Current Affairs
Science, Business Research
Politics
Banking
Economy

Reasoning:

Similarities and Differences
Space Visualization
Discriminating Observation
Problem Solving
Analysis
Judgment
Relationship Concepts
Decision Making
Visual Memory
Arithmetical Number Series
Non-Verbal Series
Figure Classification, Etc

Mathematical Ability:

Decimals and Fractions and Relationship between Numbers
Number Systems
Fundamental Arithmetical Operations
Computation of Whole Numbers
Percentages
Averages
Ratio and Proportion
Simple & Compound Interest
Profit and Loss, Discount
Ratio and Time
Menstruation
Time and Distance
Use of Tables and Graphs
Time and Work