IB ACIO Syllabus for Tier 1 and Tier 2 Exam
IB ACIO syllabus for Tier 1 and Tier 2 exams forms the base of your preparation. If you know and understand the complete syllabus, it becomes easy to make a study plan and focus on the important topics. With a clear idea of the IB ACIO syllabus 2025, you can prepare step by step and manage your time properly. It also helps in covering every subject without missing important concepts.
The Intelligence Bureau (IB) ACIO exam is conducted by the Ministry of Home Affairs for the post of Assistant Central Intelligence Officer Grade-II. The selection process of this exam has three stages: Tier 1, Tier 2, and an Interview. So, to better understand the complete IB ACIO exam syllabus 2025 for Tier 1 and Tier 2 exams with exam pattern details, keep reading.
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IB ACIO Syllabus 2025 for Tier 1 and Tier 2 Exams
IB ACIO syllabus 2025 aims to test the knowledge, reasoning ability, and writing skills of candidates. Tier 1 is objective in nature and checks General Awareness, Reasoning, Quantitative Aptitude, and English Language. Tier 2 is descriptive and focuses on Essay Writing, English Comprehension, and Writing.
Knowing the IB ACIO exam syllabus helps you prepare effectively for each stage. It also guides you to manage time and focus on topics with higher weightage. Let's now understand the IB ACIO Tier 1 syllabus and the IB ACIO Tier 2 syllabus in detail, along with the exam pattern.
Subject-Wise IB ACIO Tier 1 Syllabus
Tier 1 of the IB Assistant Central Intelligence Officer is the first stage of the written exam. It is an objective-type paper with multiple-choice questions. IB ACIO Tier 1 syllabus tests your knowledge of different subjects like General Awareness, General Studies, Reasoning, Quantitative Aptitude, and English Language.
Understanding each subject in detail helps you prepare effectively and score good marks. Check out the subject-wise syllabus of IB ACIO for Tier 1 here.
Check Out: SSC Game Changer English, Maths, General Awareness, Reasoning Combo 29000+ TCS MCQ Till 2025
IB ACIO Tier 1 Syllabus for Numerical Ability & Reasoning
IB ACIO Tier 1 Syllabus for Numerical Ability & Reasoning checks your problem-solving, logical thinking, and analytical skills. Questions asked in this section test how quickly and correctly you can solve number-based problems and reasoning puzzles. Check the key Numerical Ability & Reasoning topics of the IB ACIO exam syllabus for Tier 1 here:
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IB ACIO Tier 1 Syllabus for Numerical Ability & Reasoning |
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Alphanumeric Series |
Directions |
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Reasoning Analogies |
Input-Output |
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Artificial Language |
Odd One Out |
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Blood Relations |
Puzzles |
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Calendars |
Order and Ranking |
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Cause and Effect |
Statement and Assumptions |
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Clocks |
Statement and Conclusions |
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Coding-Decoding |
Decision Making |
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Data Sufficiency |
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Tier 1 IB ACIO 2025 Syllabus for Quantitative Aptitude
Tier 1 IB ACIO 2025 Syllabus for Quantitative Aptitude focuses on testing your ability to solve mathematical problems with accuracy and speed. It includes both basic arithmetic questions and higher-level mathematics topics. Here are the main topics from the IB ACIO Tier 1 Syllabus for Quantitative Aptitude you need to prepare:
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IB ACIO Tier 1 Syllabus for Quantitative Aptitude |
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Number Systems |
Discount |
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Percentages |
Algebra |
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Mensuration |
Differential Equations |
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Ratio and Time |
Statistics |
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Averages |
Time and Work |
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Profit and Loss |
Fractions |
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Fundamental Arithmetical Operations |
Analytical Geometry |
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Computation of Whole Numbers |
LCM and HCF |
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Use of Tables and Graphs |
Factoring |
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Decimals |
Age Problems |
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Relationship Between Numbers |
Missing Numbers |
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Operations Research & Linear Programming |
Prices and Expenditure Problems |
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Differential Geometry |
Volume & Mensuration |
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Dynamics |
Series Completion |
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Essential Mathematics |
Time and Distance |
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Calculus |
Ratio and Proportion |
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Real Analysis |
Interest (Simple & Compound) |
IB ACIO Tier 1 Syllabus for General Studies
IB ACIO Tier 1 Syllabus for General Studies mainly focuses on your awareness of history, geography, science, polity, economy, and current affairs. To get good marks in this section, you must regularly read newspapers, magazines, and reliable study materials such as All in One IB by PW. Check the detailed Tier 1 IB ACIO 2025 Syllabus for General Studies here:
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IB ACIO Tier 1 Syllabus for General Studies |
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History |
Biology |
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Geography |
Science & Technology |
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Indian Polity & Constitution |
Current Affairs |
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Economy & Finance |
Static GK |
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Physics |
Chemistry |
Tier 1 IB ACIO 2025 Syllabus for English Language
Tier 1 IB ACIO 2025 Syllabus for English Language is designed to test your command over grammar, vocabulary, and comprehension. This section in exams checks basic language usage and understanding of written English. Here's the full IB ACIO Tier 1 Syllabus for English Language:
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Tier 1 IB ACIO 2025 Syllabus for English Language |
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Spellings Correction |
Clauses |
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One Word Substitution |
Fill in the Blanks |
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Sentence Improvement |
Spot the Error |
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Verbal Comprehension Passage |
Synonyms and Antonyms |
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Adjectives |
Vocabulary |
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Detecting Misspelled Words |
Grammar |
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Idioms and Phrases |
Sentence Structure |
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Reading Passage |
Verbs |
IB ACIO Tier 2 Syllabus
IB ACIO Tier 2 syllabus focuses on writing ability, comprehension skills, and analytical thinking through descriptive questions. Unlike Tier 1, this paper does not have objective-type questions.
Instead, you will be asked to write essays, answer long descriptive questions, and solve comprehension passages. The essay topics are generally connected to current affairs, socio-political issues, economics, or general awareness matters.
Now that you have understood the IB ACIO Syllabus for Tier 1 and Tier 2 exams, it is equally important to check the IB ACIO Exam Pattern to know the marking scheme and question format.
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IB ACIO Exam Pattern for Tier 1 and Tier 2 Exams
Before starting your IB ACIO exam preparation, it is necessary to understand the exam format. According to the IB ACIO Exam Pattern 2025, the exam is conducted in two stages: Tier 1 and Tier 2. Tier 1 is an objective-type test, while Tier 2 is descriptive in nature.
Understanding the tier-wise IB ACIO Exam Pattern will help you know how many questions are asked, the marking scheme, and the total time given in each stage.
IB ACIO Exam Pattern for Tier 1
IB ACIO Exam Pattern for Tier 1 includes five sections carrying equal weightage. Each section has 20 questions for 20 marks. For every wrong answer, ¼ mark will be deducted as negative marking. The total duration of the paper is 1 hour.
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IB ACIO Exam Pattern for Tier 1 |
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Subjects |
No. of Questions |
Marks |
Duration |
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Current Affairs |
20 |
20 |
1 Hour |
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General Studies |
20 |
20 |
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Numerical Aptitude |
20 |
20 |
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Reasoning and Logical Aptitude |
20 |
20 |
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English Language |
20 |
20 |
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Total |
100 |
100 |
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IB ACIO Exam Pattern for Tier 2
The Tier 2 exam is descriptive in nature and tests your writing and analytical skills. It includes essay writing, comprehension, and long-answer-type questions based on issues like current affairs, economics, and socio-political topics. Check the detailed IB ACIO Exam Pattern for Tier 2 here:
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IB ACIO Exam Pattern for Tier 2 |
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Papers |
Maximum Marks |
Time |
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Essay Writing |
20 |
1 Hour |
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English Comprehension |
10 |
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Long Answer Type Questions |
20 |
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Total |
50 |
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Check Out: SSC Previous year Papers
IB ACIO Interview Process
Those who qualify both Tier 1 and Tier 2 exams will be called for the final stage, which is the interview round. The IB ACIO interview process carries 100 marks and plays an important role in the final selection.
Along with the interview questions, you may also have to appear for a Psychometric or Aptitude Test as part of the selection process.
IB ACIO Syllabus Weightage
To prepare well for the upcoming IB ACIO 2025 exam, it is very important to know the chapter-wise weightage of the IB ACIO 2025 Syllabus. By checking the IB ACIO Syllabus Weightage, you can understand which topics carry more marks. Focusing on high-weightage topics can save time and help you score better in both Tier 1 and Tier 2 exams.
Check the IB ACIO Syllabus Weightage as per the previous year examination here:
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IB ACIO Syllabus Weightage |
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Subject |
Chapter |
Questions (Per Shift) |
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Current Affairs (20) |
Government Policies and Schemes |
3–4 |
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National Affairs |
2–3 |
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Science and Technology |
1–2 |
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Sports |
1–2 |
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Indexes and Reports |
1–2 |
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Awards and Honours |
1–2 |
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Defence |
1–2 |
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States Affairs |
1 |
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Summits and Conferences |
1 |
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Appointments and Resignations |
0–1 |
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Art and Culture |
0–1 |
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Environment |
0–1 |
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International Affairs |
0–1 |
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Business and Economy |
0–1 |
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Days and Events |
0–1 |
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Agreements and MoUs |
0–1 |
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National Organisations |
0–1 |
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Logical Reasoning (20) |
Series |
3 |
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Analogy |
2–3 |
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Non-Verbal Reasoning |
1–2 |
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Puzzle |
1–2 |
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Classification |
1–2 |
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Syllogism |
1–2 |
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Assertion and Reason |
1–2 |
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Seating Arrangement |
1 |
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Ordering and Ranking |
1 |
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Data Sufficiency |
1 |
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Coding Decoding |
1 |
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Alphabet or Word Test |
1 |
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Statement & Conclusion |
0–1 |
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Venn Diagram |
0–1 |
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Statement & Argument |
0–1 |
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Course of Action |
0–1 |
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Clock and Calendar |
0–1 |
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English (20) |
Synonyms or Antonyms |
4–5 |
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Phrase or Idiom Meaning |
3–4 |
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Match the Following |
2–3 |
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Sentence |
2 |
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Error Spotting |
1–2 |
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Sentence Jumbles |
1–2 |
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Fill in the Blanks |
1–2 |
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Odd Man Out |
1–2 |
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Cloze Test |
0–1 |
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Para Jumbles |
0–1 |
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One Word Substitution |
0–1 |
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Parts of Speech |
0–1 |
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General Knowledge (20) |
Polity |
4–5 |
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Indian Geography |
3 |
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Economy |
3 |
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Ancient History |
2–3 |
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Medieval History |
2–3 |
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Art and Culture |
1–2 |
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Modern India (National Movement) |
0–1 |
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World Geography |
0–1 |
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Government Policies and Schemes |
0–1 |
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Modern India (Pre-Congress) |
0–1 |
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Ecology and Environment |
0–1 |
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Books and Authors |
0–1 |
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Quantitative Aptitude (20) |
Profit and Loss |
3–4 |
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Ratio and Proportion |
2–3 |
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Speed, Time and Distance |
2 |
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Interest |
1–2 |
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Percentage |
1–2 |
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Number System |
1–2 |
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Algebra |
1–2 |
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Average |
1–2 |
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Mixture Problems |
1 |
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Time and Work |
1 |
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Simplification |
0–1 |
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Progression |
0–1 |
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Problem on Age |
0–1 |
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Mensuration |
0–1 |
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How to Cover the IB ACIO Syllabus 2025 To Score Well
Covering the full IB ACIO Syllabus 2025 on time is important if you aim to score well in the exam. Since the syllabus is vast and covers subjects like General Awareness, Quantitative Aptitude, Logical Reasoning, English, and Essay writing in Tier 2, you need a smart study plan. Here are some useful tips to effectively cover the IB ACIO exam syllabus:
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Understand the Exam Pattern First: Go through the IB ACIO exam pattern and syllabus weightage to know which topics carry more marks. This will help you identify and cover high-weightage topics from the syllabus first.
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Make a Proper Study Schedule: Divide your daily study time between all subjects. Keep extra time for high-weightage topics like Current Affairs, Polity, Reasoning puzzles, and English vocabulary.
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Focus on Current Affairs Daily: Read newspapers, follow monthly current affairs magazines, and revise government schemes and national events on a regular basis.
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Practice Mock Tests and Previous Year Papers: Solving IB ACIO previous year papers will make you familiar with question trends and improve your speed and accuracy.
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Strengthen Basics First: Clear your basics in Maths and English before moving to tough questions.
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Revise Again and Again: Revision is vital. Keep short notes for formulas, important facts, and current affairs to revise them quickly before the exam.
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Prepare Well for Tier 2 Essay and Comprehension: Practice writing short essays on current topics like government policies, national security, or economic issues. Also, work on improving reading comprehension speed.
Read More: IB Security Assistant Syllabus 2025 and Exam Pattern
IB ACIO Syllabus FAQs
Q.1. What is the IB ACIO Tier 1 Syllabus?
Ans. The IB ACIO Tier 1 syllabus covers General Awareness, Quantitative Aptitude, Logical/Analytical Ability, English Language, and General Studies. These topics are asked in objective-type questions.
Q.2. What is the Tier 2 syllabus of IB ACIO?
Ans. The IB ACIO Tier 2 syllabus includes Essay Writing, English Comprehension, Precis Writing, and long-answer-type questions based on current affairs, socio-political issues, or economy-related topics.
Q.3. Does the IB ACIO exam have negative marking?
Ans. Yes, as per the IB ACIO Tier 1 exam pattern, for every incorrect answer, 0.25 marks are going to be deducted.
Q.4. Is the IB ACIO exam tough to crack on the first attempt?
Ans. While the IB ACIO exam is competitive, with the right preparation strategy, complete coverage of the IB ACIO syllabus 2025, and regular practice, you can clear it on the first attempt.
Q.5. What is the IB ACIO 2025 exam date?
Ans. The official IB ACIO 2025 exam date is yet to be announced, but the Tier 1 exam is expected to be held on September 16, 2025, based on previous year trends.
