IB ACIO Exam Pattern 2025, Marking Scheme & Question Distribution

IB ACIO exam pattern is given below.

Written Examination	Description of the Examination	Time	Marks
	Tier I Exam: 100 Objective type MCQs, divided into 5 parts containing 20 questions of 1 mark each on.   Current Affairs, General Studies, Numerical Aptitude, Reasoning/Logical Aptitude, English	1 Hour	100
	Tier II: Descriptive type paper of 50 marks essay (30 marks) and English comprehension and precis writing (20 marks)	1 Hour	50
Interview	Tier 3: Interview	–	100

The General Awareness syllabus is given below.

General Studies	Current Affairs
Polity and Indian Constitution Indian history Science and Technology Geography Physics Biology Chemistry Economics and Finance Computer Science	National News International News New Schemes Eminent Personalities Financial Schemes Nobel Prize Winners Awards

The syllabus for Quantitative Aptitude is given below.

Advance	Arithmetic
Mensuration Trigonometry Height and Distance Triangle Circle Polygon Tangent	Ratio and Proportion Mixture and Allegation Missing Numbers Age Time and Work Boat and Stream Volume LCM and HCF Percentage Profit and Loss Simple and Compound Interest Time and Distance Average Fractions Series Completion

The subjects that are included in the Intelligence Bureau Security Assistant Syllabus are Reasoning, Arithmetic, General Knowledge, General Studies, and General English . General Awareness & General Studies: Current Affairs (5-6 months), Indian Polity & Constitution, Science & Technology, Physics Economy & Finance, Geography, History, Chemistry Biology and Static GK. Reasoning: Logical Venn diagram, Missing Number, Paper-cutting & folding, Embedded figures, Figure Formation & Analysis, Series, Alphabet Test, Analogy, Arithmetic Reasoning, Blood Relation, Classification, Coding decoding, Distance direction test, Matrix, Cube & Dice, Mirror Image, Water Image, Pattern Completion, Counting of figures. Quantitative Aptitude Speed, Distance & Time, Profit loss, Discount, Ratio Proportion, Average, Boat & Stream, CI & SI, LCM & HCF, Mixture & Allegation, Partnership, Percentages, Complementary angles, Pipes & Cistern, Problem on Ages, Time & Work, Mensuration Data Interpretation, Standard Trigonometry Identities, Heights and Distances (Basic), Histogram, Frequency polygon, Bar diagram & Pie chart. General English . Synonyms & Antonyms, Spotting Error, Para Jumble, Reading Comprehension, Cloze Test Sentence Improvement, fill in the blanks, Idiom & Phrase, One-word Substitution, Active & Passive Voice, and Preposition. For more details, you may visit the Shiksha Intelligence Bureau exam page. (https://www.shiksha.com/exams/ib-acio-exam-syllabus). I hope this will help you.

The important topics are given below.

Blood Relation Test	Series Completion
Analogy	Character Puzzles
Classification	Series
Analytical Reasoning	Pattern Completion
Chart Logic	Image Analysis
Data Sufficiency	Logical Sequence of Words
Seating Arrangement	Direction Sense Test