IB(Intelligence Bureau)
March 7, 2025 2025-03-07 11:41IB(Intelligence Bureau)
IB (INTELLIGENCE BUREAU)

About This Course
The Intelligence Bureau (IB) is India’s internal security and counterintelligence agency, established in 1887. It operates under the Ministry of Home Affairs and is responsible for domestic intelligence and internal security. The IB’s primary functions include:
- Gathering intelligence within India.
- Counterterrorism operations.
- Counterintelligence activities.
- VIP security and threat assessment.
- Monitoring sensitive areas and issues.
The IB has a rich history and has played a significant role in India’s internal security. It is one of the oldest intelligence agencies in the world and has been involved in various critical operations to safeguard the nation.
Criteria to Join IB as ACIO
- Nationality: Must be an Indian citizen.
- Educational Qualifications:
A Bachelor’s degree from a recognized university with a minimum of 50% marks.
Knowledge of computers is desirable.
- Age Limit:
Between 18 and 27 years.
Age relaxation is provided as per government rules (e.g., SC/ST: 5 years, OBC: 3 years).
- Experience: Field experience in intelligence work is desirable.
- Physical Fitness: Candidates must demonstrate excellent physical and mental fitness.
- Background Checks: Candidates must have a clean legal record, free of any criminal background or pending court cases.
Recruitment Pathways
- IB ACIO Exam: The most common route to join IB is through the Intelligence Bureau Assistant Central Intelligence Officer (ACIO) exam conducted by the Ministry of Home Affairs. This exam is held annually at the national level and includes three stages: Tier-I (objective test), Tier-II (descriptive test), and an interview.
- Direct Recruitment: For specialized roles, IB occasionally recruits directly from universities and other institutions.
Exam Details
The IB ACIO exam consists of three stages: Tier I, Tier-II, and Tier-III.
- Tier-I
Type: Objective type multiple choice questions.
Total Marks: 100.
Duration: 60 minutes.
Sections:
General Awareness
Quantitative Aptitude
Logical/Analytical Ability
English Language
General Studies
- Tier-II
Type: Descriptive type paper.
Total Marks: 50.
Duration: 60 minutes.
Sections:
Essay Writing (30 marks)
English Comprehension and Precis Writing (20 marks)
- Tier-III
Type: Interview.
Total Marks: 100.
Criteria to Join IB as JIO
- Nationality: Must be an Indian citizen.
- Educational Qualifications:
A Diploma in Engineering or a Bachelor’s Degree in Science with specific specializations, or a Bachelor’s Degree in Computer Applications from a recognized university/institute.
- Age Limit:
Between 18 and 27 years.
Age relaxation is provided as per government rules:
OBC: 3 years.
SC/ST: 5 years.
- Experience: No prior experience is required.
- Physical Fitness: Candidates must demonstrate excellent physical and mental fitness.
- Background Checks: Candidates must have a clean legal record, free of any criminal background or pending court cases.
Recruitment Pathways
- IB JIO Exam: The most common route to join IB is through the Intelligence Bureau Junior Intelligence Officer (JIO) exam conducted by the Ministry of Home Affairs. This exam includes multiple stages:
- Tier-I: Objectivetype multiplechoice questions.
- Tier-II: Skill test.
- Tier-III: Interview/Personality test.
Exam Details | Description |
Tier-I | Objective type multiple choice questions. Total Marks: 100. Duration: 2 hours. |
Syllabus for Tier-I | General Mental Ability, Reasoning Ability, Quantitative Aptitude, Logical/Analytical Reasoning, General Awareness. |
Tier-II | Skill test. Total Marks: 30. |
Syllabus for Tier-II | Technical Subjects: Electronics & Telecommunication Engineering, Computer Science Engineering, Physics, Mathematics. |
Tier-III | Interview/Personality test. Total Marks: 20. |
Section | Topics |
General Mental Ability | Reasoning Ability, Quantitative Aptitude, Logical/Analytical Reasoning, General Awareness. |
Reasoning Ability | Alphanumeric Series, Direction and Distance Test, Blood Relation, Analogy, Data Sufficiency, Coding Decoding, Cubes and Dice, Arithmetic Reasoning, Decision Making, Reasoning Clock, Reasoning Calendar, Number Series, Number Arrangement, Embedded Figures, Analytical Reasoning, Logical Reasoning, Syllogism, Completion of Patterns, Classifications, Order & Ranking, Order & Word Formation, Arrangement Pattern, Mixed Series, Averages, Mixtures and Alligation, Percentages, Profit and Loss, Time & Work, Arithmetical Operations, Whole Numbers. |
Quantitative Aptitude | Number Series, Simplification/Approximation, Quadratic Equations, Data Interpretation, Data Sufficiency, Mensuration, Percentages, Ratio and Proportion, Averages, Simple and Compound Interest, Profit and Loss, Time and Work, Time, Speed and Distance, Partnership, Problems on Ages, Mixture and Alligation, Pipes and Cisterns, Probability. |
Logical/Analytical Reasoning | Seating Arrangement, Puzzles, Inequality, Syllogism, Input Output, Coding Decoding, Blood Relations, Order and Ranking, Distance and Direction, Statement and Argument, Assumptions, Courses of Action, Cause and Effect, Critical Reasoning. |
General Awareness | Current Affairs (National and International), General Science, History, Geography, Indian Polity and Constitution, Indian Economy, Science & Technology, Sports, Books and Authors, Awards and Honors, Important Days, National and International Organizations. |
Technical Subjects | Electronics & Telecommunication Engineering, Computer Science Engineering, Physics, Mathematics. |
Electronics & Telecommunication Engineering | Electronic Components & Materials, Electronic Devices and Circuits, Digital Electronics, Linear Integrated Circuit, Electronic Measurements, Microprocessor and Microcontroller, Communication Engineering, Data Communication and Network, Basic Electrical Engineering. |
Computer Science Engineering | Computer Programming, Computer Fundamentals, MS Windows, MS Word, MS Excel & PowerPoint, Computer Organization, C Language, Information Systems, DBMS fundamentals, Data Structure using C++, Operating System using LINUX, System Programming, Web Technologies and Programming, System Analysis and Design, Data and Network Communication, Java Programming, Software Engineering. |
Physics | Mechanics, Heat & Thermodynamics, Electromagnetism, Modern Physics, Optics, Waves and Oscillations. |
Mathematics | Algebra, Calculus, Geometry, Probability, Statistics, Trigonometry, Linear Algebra, Differential Equations, Real Analysis, Mathematical Logic, Discrete Mathematics. |
Criteria to Join IB as Security Assistant
- Nationality: Must be an Indian citizen.
- Educational Qualifications:
Must have passed the 10th class examination or equivalent from a recognized board.
Possession of a domicile certificate of the state against which the candidate has applied.
Possession of a valid driving license for motor cars (LMV) issued by the competent authority.
Knowledge of motor mechanism (the candidate should be able to remove minor defects in the vehicle).
- Age Limit:
Minimum Age: 18 years.
Maximum Age: 27 years.
Age relaxation is provided as per government rules:
SC/ST: 5 years.
OBC: 3 years.
- Experience:
Field experience in intelligence work is desirable but not mandatory.
Experience of driving a motor car for at least one year after obtaining a valid driving license.
- Language Proficiency:
Candidates must be fluent in writing and speaking skills in one of the local languages of the state they are applying for.
Recruitment Pathways
IB Security Assistant Exam: The most common route to join IB is through the Intelligence Bureau Security Assistant (SA) exam conducted by the Ministry of Home Affairs. This exam includes multiple stages:
- Tier-I: Objectivetype multiplechoice questions.
- Tier-II: Descriptivetype paper.
- Tier-III: Interview/Personality test.
Tier | Details | Marks Description |
Tier 1 | Written Exam | |
Objective type questions | ||
Subjects: General Awareness, Quantitative Aptitude, Logical Reasoning, English Language | ||
Duration: 2 hours | ||
Total Marks: 100 (approximate) | 1. General Awareness: 25-30 marks | |
Negative Marking: Yes (1/4th marks for incorrect answers) | 1/4th marks will be deducted for each wrong answer in the exam | |
Tier 2 | Skill Test / Regional Language Test | |
Local/Regional language test (if applicable, depending on the region) | Marks vary based on the region and test conditions; this is typically a qualifying test with no significant weightage in overall selection. | |
Tier 3 | Interview & Document Verification | |
Interview for shortlisted candidates | No fixed marks for the interview, but it is used to assess the candidate’s suitability and personality. | |
Document Verification | No marks are assigned, but documents are checked for authenticity. | |
Medical Examination (Post selection) | Pass/Fail basis; it is not scored but is essential for final selection. |
Tier 1 Written Exam Marks Description
- General Awareness: Questions about current events, history, geography, politics, economics, and more.
- Quantitative Aptitude: Mathematical problems covering topics like arithmetic, number series, time and work, and speed, time, distance.
- Logical Reasoning: Problems related to reasoning, puzzles, analogies, number series, and figurebased questions.
- English Language: Comprehension, sentence correction, synonyms/antonyms, vocabulary, and grammarrelated questions.
Each subject typically carries a certain weightage, which contributes to the total 100 marks.
Tier 2 Skill / Regional Language Test
- This test assesses candidates’ proficiency in the local language (if applicable). It is usually a qualifying test, meaning it is required for clearing the process but doesn’t contribute to the final marks calculation.
Tier 3 Interview & Medical Test
- Interview: It is more of a personality and suitability assessment rather than a strictly scored exam. However, candidates who perform poorly in the interview can be disqualified.
- Medical Test: No marks are assigned, but it is a crucial step in confirming the candidate’s physical fitness.
In this setup, Tier 1 (Written Exam) holds the major weightage, and Tier 2 and Tier 3 serve as qualifying rounds.
Criteria to Join IB as Multi-Tasking Staff (MTS)
- Nationality: Must be an Indian citizen.
- Educational Qualifications:
Must have passed the 10th class examination or equivalent from a recognized board.
Possession of a domicile certificate of the state against which the candidate has applied.
- Age Limit:
Minimum Age: 18 years.
Maximum Age: 25 years.
- Age relaxation is provided as per government rules:
SC/ST: 5 years.
OBC: 3 years.
PwD: 10 years.
ExServicemen: As per government rules.
Widows, Divorced Women, and Women Judicially Separated from Their Husbands and Not Remarried: Up to 35 years (General) and 40 years (SC/ST).
- Experience: No prior experience is required.
- Physical Fitness: Candidates must demonstrate excellent physical and mental fitness.
- Background Checks: Candidates must have a clean legal record, free of any criminal background or pending court cases.
Recruitment Pathways
IB MTS Exam: The most common route to join IB is through the Intelligence Bureau Multi-Tasking Staff (MTS) exam conducted by the Ministry of Home Affairs. This exam includes multiple stages:
- Tier-I: Objective type multiple choice questions.
- Tier-II: Descriptive type paper.
- Tier-III: Interview/Personality test.
Details | Marks Description |
Written Exam | |
Objective type questions | |
Subjects: General Awareness, Quantitative Aptitude, Logical Reasoning, English Language | |
Duration: 2 hours | |
Total Marks: 100 (approximate) | 1. General Awareness: 25-30 marks |
Negative Marking: Yes (1/4th marks for incorrect answers) | 1/4th marks will be deducted for each wrong answer in the exam |
Interview & Document Verification | |
Interview for shortlisted candidates | The interview assesses the suitability of candidates for the post. No fixed marks are awarded, but the performance matters for final selection. |
Document Verification | No marks are awarded, but document verification is mandatory. |
Medical Examination (Post selection) | Pass/Fail basis; it is not scored but is required for final selection. |
Written Exam Marks Description
- General Awareness (25-30 marks): Questions related to current affairs, history, geography, politics, economics, general science, etc.
- Quantitative Aptitude (25-30 marks): Includes questions on arithmetic, number series, percentage, time & work, profit & loss, etc.
- Logical Reasoning (20-25 marks): Includes puzzles, analogies, figure based reasoning, syllogism, etc.
- English Language (15-20 marks): Includes questions on grammar, comprehension, sentence correction, synonyms, and antonyms.
Interview & Document Verification Marks Description
- Interview: The interview stage helps assess the candidate’s personality and suitability for the role. It does not carry fixed marks but is essential for final selection.
- Document Verification: This is to check the authenticity of the documents submitted by candidates. It is mandatory but does not contribute any marks.
- Medical Examination: After the interview and document verification, candidates must clear a medical exam, but it is only a qualifying step, not contributing to the marks.
Syllabus
Tier-I Syllabus | Topics | |
General Awareness | Current Affairs (National and International), Important Days, Indian History, Politics, Geography, Economy, Science and Technology, Sports, Awards and Honors. | |
Quantitative Aptitude | Simplification, Number Series, Quadratic Equations, Data Sufficiency, Data Interpretation, Ratio and Proportion, Mixtures and Alligations, Averages, Percentages, Profit and Loss, Simple and Compound Interest, Discounts, Time and Distance, Time and Work, Partnerships, LCM and HCF, Permutation and Combination, Algebra, Probability, Calculus, Analytical Geometry, Mensuration, Statistics, Differential Equations, Fractions, Real Analysis, Dynamics. | |
Logical/Analytical Ability | Puzzles, Seating Arrangement, Blood Relations, Syllogism, Input-Output, Order and Ranking, Inequalities, Calendars and Clocks, Data Sufficiency, Coding-Decoding, Alphanumeric Series, Verbal and Non-Verbal Reasoning, Distance and Direction, Odd One Out, Cause and Effect, Charts, Classifications, Character Puzzles, Completion of Patterns, Logical Sequence of Words, Image Analysis, Decision Making. | |
English Language | Reading Comprehension, Synonyms, One Word Substitution, Adjectives, Idioms and Phrases, Clauses, Parts of Speech, Error Detection, Cloze Test, Fill in the Blanks, Improving Paragraphs and Sentences, Completion of Paragraphs, Para-jumbling Sentences, Narration Modes, Voice Change, Sentence Structure, Single or Double Fillers, Prepositions, Spellings Correction, Verbs. | |
General Studies | Indian History, Polity and Indian Constitution, Geography, Science and Technology, Computer Science, Physics, Chemistry, Biology, Economics and Finance. | |
Tier-II Syllabus | Topics | |
Essay Writing | Topics related to national security, current affairs, and general issues. | |
English Comprehension and Precis Writing | Comprehension passages, Precis writing. |
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₹ 96,000