IB ACIO Syllabus 2025: The Ministry of Home Affairs (MHA) releases the syllabus of IB ACIO 2025 exam. IB ACIO 2025 syllabus includes the important topics that candidates need to prepare for the exam. The Tier-1 syllabus includes subjects like General Awareness, Quantitative Aptitude, English Language, Logical/Analytical/Numerical Ability and Reasoning, and General Studies. Tier-2 includes Essay Writing and English Comprehension & Precis Writing, and Tier-3 is the Interview round. It is one of the most sought-after and prestigious posts in India.
Latest- IB ACIO Recruitment 2025 notification released
Aspirants must go through the IB ACIO 2025 syllabus to get selected as an Intelligence Bureau Assistant Central Intelligence Officer (IB ACIO). Aspirants need to clear three phases of the IB ACIO exam. In this article, aspirants can find complete details of the IB ACIO Syllabus 2025.
IB ACIO Syllabus 2025 Subject-Wise
MHA will issue the notification to recruit thousands of vacancies for the post of ACIO Grade-II/Executive in Intelligence Bureau every year. The IB ACIO consists of three tiers. IB ACIO Tier-1 exam is a written objective type of exam. The tier-2 exam is descriptive in nature and those who will pass the tier- 1 & 2 will be selected for Tier-3 is Interview. Candidates are advised to go through the complete syllabus for their development.
- Tier 1 (Phase-1)
- Tier 2 (Phase-2)
- Interview (Phase-3)
IB ACIO Syllabus 2025 Tier- 1
Here, we have shared the syllabus of IB ACIO 2025 Tier-1. Candidates can check the syllabus tabulated below:
IB ACIO Syllabus 2025 for General Awareness & General Studies
| History | Biology |
| Physics | Current Affairs |
| Static G.K | Science & Technology |
| Geography | Chemistry |
| Economic & Finance | Indian Polity & Constitution |
IB ACIO Syllabus 2025 for Quantitative Aptitude
| Number systems | Mensuration |
| Percentages | Averages |
| Ration & Time | Profit & Loss |
| Computation of whole numbers | Fundamental Arithmetical Operations |
| Operations Research & Linear Programming | Decimals |
| Relationship between numbers | Use of tables & graphs |
| Dynamics | Differential Geometry |
| Essential Mathematics | Real Analysis |
| Calculus | Ration & Proportion |
| Time & Distance | Interest |
| Algebra | Discount |
| Differential Equations | Statistic |
| Time & Work | Ratios |
| Fraction | Factoring |
| LCM & HCF | Analytical Geometry |
| Prices and Expenditure Problems | Age |
| Missing Numbers | Volume |
| Simple and Compound Interest | Series Completion |
| Relation between Numbers |
IB ACIO Syllabus 2025 for Logical/Analytical/Numerical Ability & Reasoning
| Artificial Language | Alphanumeric series |
| Blood Relations | Reasoning Analogies |
| Clocks | Calendars |
| Off one out | Puzzles |
| Cause & Effects | Coding-Decoding |
| Direction | Input-Output |
| Statement and Conclusions | Order & Ranking |
| Statement and Assumptions | Decision Making |
| Data Sufficiency |
IB ACIO Syllabus 2025 for English Language
| One Word Substitution | Spellings Correction |
| Verbal Comprehension Passage | Improvement |
| Verbs | Clauses |
| Adjectives | Idioms & Phrases |
| Detecting Mis-spelt words | Passages |
| Fill in the blanks | Grammar |
| Senate Structure | Vocabulary |
| Spot the error | Synonyms/Antonyms |
IB ACIO Syllabus 2025 Tier- 2
Here, we have shared the syllabus of IB ACIO 2025 Tier-2. This section is divided into two parts (Essay Writing and English Comprehension & Precis Writing). Candidates can check the syllabus listed below:
- Essay Writing: In this section, candidates need to write an essay on the following topics. Example
- Cultural Diversity of India
- Emerging Trends in India
- Security Threats, etc.
- English Comprehension & Precise Writing: In this section, the candidate’s English Comprehension will be examined.
IB ACIO 2025 Exam Pattern
Candidates can check the exam pattern of both tiers (Tier-1 & Tier-2) and prepare for the IB ACIO exam 2025. Candidates will be required to have at least 33% in the exam. After the performance in tier-1 & 2 candidates will be called for an interview. Here, candidates can refer to the following exam pattern given below:
IB ACIO 2025 Tier-1 Exam Pattern
| Section | No. of Questions | Duration |
| General Awareness | 20 questions | 01 hour |
| Quantitative Aptitude | 20 questions | |
| Logical/Analytical Ability | 20 questions | |
| English Language | 20 questions | |
| General Studies | 20 questions | |
| Total | 100 Questions |
Note: There will be a negative marking of ¼ mark for each incorrect answer.
IB ACIO 2025 Tier-2 Exam Pattern
| Papers | Maximum Marks | Duration |
| Essay | 30 marks | 01 hour |
| English comprehension & précis writing | 20 marks | |
| Total | 50 Marks |
IB ACIO 2025 Interview
| Interview | Maximum Marks |
| Interview | 100 marks |
IB ACIO 2025 Exam Centres
The exam centres are located in some of the cities of India. Here, aspirants can go through the following exam centres of IB ACIO. Check the exam centres that are located near to you.
| Lucknow | Purnea |
| Guntur | Chandigarh |
| Kakinada | Bhilai Nagar |
| Kurnool | Bilaspur |
| Nellore | Raipur |
| Tirupathi | Delhi NCR |
| Rajahmundry | Surat |
| Vijayawada | Rajkot |
| Visakhapatnam | Shimla |
| Vizianagaram | Ranchi |
| Itanagar | Bokaro |
| Naharlagun | Jamshedpur |
| Dibrugarh | Bengaluru |
| Guwahati | Kannur |
| Jorhat | Kozhikode |
| Silchar | Bhopal |
| Bhagalpur | Mumbai |
| Tezpur | Nagpur |
| Muzaffarpur | Cuttack |
| Patna | Jaipur, etc. |
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