The Intelligence Bureau, under the Ministry of Home Affairs (MHA), organizes the IB ACIO Exam annually to hire eligible candidates for the role of Assistant Central Intelligence Officer Grade-II Executive. The recruitment process is carried out in three stages, testing candidates through a detailed syllabus that covers General Studies, Current Affairs, Quantitative Aptitude, Reasoning, and English.
IB ACIO Syllabus and Exam Pattern 2025
The IB ACIO 2025 is scheduled to fill 3717 Grade II/Executive vacancies in the Intelligence Bureau of India. To secure a good score, candidates must prepare thoroughly for both stages, as each tests different skills such as speed, accuracy, writing ability, and analytical thinking. This article provides the detailed IB ACIO Syllabus and Exam Pattern 2025 to help aspirants plan their preparation effectively.
Also Read, IB ACIO Admit Card 2025
Also Check, IB ACIO Exam Analysis 2025, Shift 1, 16 September
IB ACIO Syllabus 2025: Overview
The examination will be held in two stages Tier 1 (Objective Test) and Tier 2 (Descriptive Test). The Tier 1 exam will be held on 16, 17 & 18 September 2025. Check out the table below to get more information on IB ACIO Syllabus 2025. This IB ACIO Syllabus 2025 Overview includes all the content in a short format.
| IB ACIO Syllabus 2025 | |
| Organization | Intelligence Bureau |
| Exam Name | Assistant Central Intelligence Officer-Grade-II/Executive Examination 2025 |
| Post | Assistant Central Intelligence Officer, Grade II/Executive |
| Vacancy | 3717 |
| Category | Syllabus |
| Negative Marking | 1/4 marks for each wrong attempt |
| Selection Process | Written Examination and Interview |
| Application Mode | Online |
| Official Website | mha.gov.in |
IB ACIO 2025 Selection Process
The IB ACIO Selection Process 2025 is carried out in multiple stages to ensure the recruitment of capable and skilled candidates for the post of Grade II/Executive. It begins with the Tier 1 Objective Exam, followed by the Tier 2 Descriptive Exam, and finally the Interview round. Candidates must qualify at each stage to progress further, and the final selection is based on overall performance in all three phases.
IB ACIO Exam Pattern 2025
The IB ACIO Exam Pattern 2025 is designed to test candidates through three stages Tier 1, Tier 2, and Interview. Tier 1 is an objective-type paper with 100 questions covering Current Affairs, General Studies, Numerical Aptitude, Reasoning, and English. Tier 2 is a descriptive test that evaluates writing, comprehension, and analytical skills. The final stage, Tier 3, is the Interview round, which carries 100 marks. This structured pattern ensures a comprehensive assessment of a candidate’s knowledge, aptitude, and suitability for the role of Grade II/Executive in the Intelligence Bureau.
| IB ACIO Exam Pattern 2025 | |||
| Written Examination | Description of the Examination | Time | Marks |
|
Tier 1: 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 2: Descriptive type paper of 50 marks Essay (20 marks); English comprehension (10 marks) & Long answer type questions (2 questions of 10 marks each on Current Affairs, Economics, Socio-political issues etc. (20 marks). | 1 Hour | 50 | |
| Interview | Tier3: Interview | – | 100 |
IB ACIO Tier I Exam Pattern 2025
The IB ACIO Tier I Exam is divided into five parts: Current Affairs, General Awareness, Quantitative Aptitude, Reasoning, and English Language. The detailed exam pattern is given in the table below.
| IB ACIO Exam Pattern 2025 For Tier I | |||
| Subjects | No. Of Questions | Marks | Time |
| Current Affairs | 20 | 20 | 1 Hour |
| General Studies | 20 | 20 | |
| Numerical Aptitude | 20 | 20 | |
| Reasoning and Logical Aptitude | 20 | 20 | |
| English Language | 20 | 20 | |
| Total | 100 | 100 | |
IB ACIO Tier II Exam Pattern 2025
The Tier II Exam for Intelligence Bureau ACIO will be Descriptive Type. The time period for the complete IB ACIO Tier II Exam 2025 is 1 Hour.
| IB ACIO Exam Pattern 2025 For Tier II | |||
| Topic | Maximum Marks | Time Duration | |
| Essay Writing | 20 | 1 Hour | |
| Comprehension | 10 | ||
| Current Affairs, Economics, Socio-political issues, etc. (2 questions of 10 marks each) | 20 | ||
| Total | 50 | ||
IB ACIO Tier III Personal Interview
The Tier‑3 stage of the IB ACIO selection process is a face-to-face personal interview conducted to assess the overall suitability of the candidate for the role of Assistant Central Intelligence Officer. This stage holds significant importance, as it goes beyond academics and tests the candidate’s mental alertness, presence of mind, and awareness of national security issues.
IB ACIO Syllabus 2025
To perform well in the IB ACIO 2025 Exam, candidates need a clear grasp of the core subjects covered in the objective paper. The Tier-I exam is just to test a candidate’s awareness, analytical thinking, and problem-solving skills across five key areas: Current Affairs, General Studies, Quantitative Aptitude, Reasoning Ability, and English Language. In the following section, we break down each subject to help you focus on what truly matters for scoring high.
| IB ACIO Syllabus 2025 |
||||
| Current Affairs Syllabus | General Studies Syllabus | Numerical Aptitude Syllabus | Reasoning / Logical Aptitude Syllabus | English Syllabus |
| National News | Polity and the Indian Constitution | Ratios | Seating Arrangement |
Idioms and Phrases
|
| International News | Indian history | Missing Numbers | Puzzles | Verbs |
| New Schemes | Science and Technology | Age | Syllogism | Fill in the blanks |
| Eminent Personalities | Geography | Time and Work | Blood Relations | Spellings |
| Financial Schemes | Physics | Volume | Input-Output | Grammar |
| Nobel Prize Winners | Biology | LCM and HCF | Order and Ranking | Adjectives |
| Awards. | Chemistry | Percentage | Calendars and Clocks | Fill in the blanks |
| Economics and Finance | Factoring | Inequalities | Spellings | |
| Computer Science | Profit and Loss | Alphanumeric Series | Grammar | |
| Current Affairs | Simple and Compound Interest | Data Sufficiency |
Synonyms/Antonyms
|
|
| Static GK | Time and Distance | Coding-Decoding |
Verbal Comprehension Passage
|
|
| Average | Distance and Direction | Spot the error | ||
| Fractions | Verbal and Non Verbal Reasoning | Verbs | ||
| Mensuration | Cause and Effect |
Sentence Structure
|
||
| Prices and Expenditure Problems | Odd One Out | Vocabulary | ||
| Series Completion | Charts |
Detecting misspelled words
|
||
| Real Analysis | Cause and Effect | Clauses | ||
| Essential Mathematics | Character Puzzles | Passage | ||
| Computation of Whole Numbers | Classifications | Improvement | ||
| Analytical Geometry | Logical Sequence of Words |
One-word substitution
|
||
| Prices and Expenditure Problems | Completion of Patterns | |||
| Operations Research & Linear Programming | Decision Making | |||
| Calculus | Image Analysis | |||
|
Fundamental Arithmetical Operations
|
||||
IB ACIO Tier II Syllabus
Below we have discussed the IB ACIO Tier II Syllabus.
| IB ACIO Tier II Syllabus |
||
| Section | Marks | Details |
| Essay Writing | 20 |
Write a structured essay (intro, body, conclusion)
|
| English Comprehension | 10 |
Read and analyse a passage, answer questions that test understanding and vocabulary
|
| Long Answer Type Questions | 20 | (2 questions of 10 marks each on Current Affairs, Economics, Socio-political issues, etc. |
| Duration | 60 minutes | |
Preparation Tips for IB ACIO 2025 Exam
To crack the IB ACIO 2025 exam, you need a proper study plan and regular practice. Start by understanding the exam pattern and syllabus. Focus on important topics in reasoning, general awareness, English, and quantitative aptitude. Read newspapers daily to stay updated with current affairs. Practice mock tests and solve previous year papers to improve speed and accuracy. For Tier 2, work on your essay and precis writing. Also, prepare for the interview by improving your communication skills and general knowledge.
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