The Intelligence Bureau (IB) under the Ministry of Home Affairs (MHA) conducts the Junior Intelligence Officer (JIO) recruitment exam to hire skilled candidates with strong computer and electronics knowledge. If you are preparing for the IB JIO exam in 2025, understanding the syllabus and exam pattern is the first step toward success.
In this blog, I will be covering
- IB JIO Exam Pattern 2025
- Detailed Subject-Wise Syllabus (Computer, Electronics, General Studies, Aptitude)
- Downloadable Syllabus PDF
- Preparation Tips
Quick Info Overview: IB JIO 2025 Notification
| Aspect | Details |
| Post Name | Junior Intelligence Officer Grade-II/Tech (JIO-II/Tech) |
| Organization | Intelligence Bureau (IB), Ministry of Home Affairs |
| Vacancies | Total: 394 • UR: 157 • EWS: 32 • OBC: 117 • SC: 60 • ST: 28 |
| IB JIO Salary | Level-4 (Rs. 25,500 – 81,100) + 20% Special Security Allowance + other govt. allowances. |
| Application Mode | Online Only |
| Application Start Date | 23rd August 2025 |
| Application End Date | 14th September 2025 |
Table of Contents
Eligibility Criteria
| Essential Educational Qualifications (As on 14.09.2025) | Details |
| Diploma in Engineering | Electronics, E&TC, E&C, E&E, IT, Computer Science, Computer Engineering, or Computer Applications |
| OR | |
| Bachelor’s Degree in Science | Electronics, Computer Science, Physics, or Mathematics |
| OR | |
| Bachelor’s Degree in Computer Applications (BCA) |
Detailed Subject-Wise Syllabus (Computer, Electronics, General Studies, Aptitude)
IB JIO General Ability Syllabus 2025:- Common to all Branches
| Subject | Topics Covered |
| Reasoning Ability | Alphanumeric Series, Direction & Distance Test, Blood Relation, Analogy, Data Sufficiency, Coding-Decoding, Cubes & Dice, Arithmetic Reasoning, Decision Making, Clock Reasoning, Calendar Reasoning, Number Series, Number Arrangement, Embedded Figures, Analytical Reasoning, Logical Reasoning, Syllogism, Completion of Patterns, Classifications, Order & Ranking, Word Formation, Arrangement Pattern, Mixed Series |
| Quantitative Aptitude | Averages, Mixtures & Alligation, Percentages, Profit & Loss, Time & Work, Arithmetical Operations, Whole Numbers, Time, Speed & Distance, Simple Interest, Compound Interest, Simplification, Discount, Number System, HCF & LCM |
IB JIO Branch Wise-Syllabus 2025
The Branch subjects cover approximately 75% of the Tier-I exam questions and are aligned with the candidate’s educational qualifications (e.g., Diploma or Graduation in relevant streams). Below are the detailed syllabi for Electronics, Computer Science, Physics, and Mathematics.
IB JIO Computer Syllabus 2025
| Subject | Topics Covered |
| Computer Fundamentals & Software | Generations of Computer, Types of Computer, Components of Computer, Computer Memory, Shortcut Keys, Storage Devices, Input/Output Devices, Windows Versions, Computer Virus, Software & Hardware Questions |
| Networking & Internet | Computer Networks, TCP/UDP, Sockets, Congestion Control, Network Devices, Network Topology, OSI Model, Internet Basics |
| Productivity Tools | MS Windows, MS Word, MS Excel, MS Office Tools, Computer Aptitude |
Electronics / ECE / Electrical IB JIO Syllabus 2025
| Subject | Topics Covered |
| Digital Electronics | NOT Gate, AND Gate, OR Gate, NAND Gate, NOR Gate, Ex-OR Gate, Ex-NOR Gate, Logic Gates, Karnaugh Maps, ROM, RAM, Boolean Functions, Binary Operations, Number Systems, Programmable Logic Devices, Adders, Subtractors, Comparators |
| Analog Electronics & Electrical Engineering | Capacitance & Factors Affecting, Current & its Unit, Inductance, Energy & Units, Resistance Factors, Voltage & Units, Current Transformer, Megger, Tank Circuit, Signal Generator, Star & Delta Connection, Earth Fault Detection, Cathode Ray Oscilloscope, Power Plants (Thermal, Solar, Economics of Power Generation), Electric Welding, Arc Welding, Resistance Welding |
Physics IB JIO Syllabus 2025
| Subject | Topics Covered |
| General Physics | Measurements, Laws of Motion, Speed & Velocity |
| Mechanics | Circular Motion, Energy & Momentum, Gravity, Fluid Mechanics |
| Oscillations & Waves | Wave Properties |
| Thermal Physics & Thermodynamics | Heat Transfer, Thermodynamics, Thermal Properties |
| Electricity & Magnetism | Circuit Elements, DC Circuits, Magnetism, Magnetic Effects of Current, Electromagnetic Induction |
| Optics & Modern Physics | Wave Properties, Reflection & Refraction, Ray Optics, Physical Optics, Quantum Phenomenon, Atomic Physics, Nuclear & Particle Physics, Relativity |
Mathematics IB JIO Syllabus 2025
| Subject | Topics Covered |
| Algebra & Geometry | Linear Algebra, Arithmetic Progressions, Circles, Lines, Triangles, Three Dimensional Geometry, Sequences & Series, Matrices, Determinants, Sets, Relations & Functions, Linear Inequations, Complex Numbers |
| Calculus | Limits & Continuity, Differential Calculus, Methods of Differentiation, Applications of Derivatives, Solution of Differential Equations, Indefinite Integrals |
| Probability & Statistics | Elementary Statistics, Probability, Binomial Theorem, Permutations & Combinations |
| Other Key Topics | Averages, Comparison of Quantity, Vector Algebra |
IB JIO Syllabus 2025 PDF
Exam Pattern (Selection Process) of IB JIO 2025
| Tier | Type | Marks | Duration | Key Details |
| Tier-I | Online Objective MCQ Test | 100 | 2 Hours | • Syllabus: General Mental Ability (25%) & Technical Subjects (75%) • Negative Marking: ¼ mark deducted for each wrong answer. |
| Tier-II | Skill Test (Practical) | 30 | – | Technical and practical test commensurate with the job profile. |
| Tier-III | Interview/Personality Test | 20 | – | Assessment of suitability for the role. |
- Candidates must secure minimum qualifying marks in Tier-I to be shortlisted for subsequent tiers.
- Final Merit will be based on the combined scores of all three tiers.
| Apply Online | Click Here |
|---|---|
| Download Previous Year Question PDF of IB JIO | Click Here |
| Official Notification | Download PDF Here |
Preparation Tips for IB JIO 2025
Step-by-step approach to effective preparation
- Read the complete syllabus carefully
Begin by going through the entire syllabus in detail. If you have already studied these subjects during your diploma or graduation, your first task is to revise them thoroughly. - Solve previous year question papers
Download previous years’ question papers and try solving them without referring to notes. If you face difficulty, revisit the syllabus to strengthen your weak areas. After revision, attempt the same papers again to check your improvement. - Take regular mock tests
Mock tests help you revise the full syllabus in an exam-like environment. They also help you assess your speed, accuracy, and time management. Always analyze your performance after each mock test and work on your weak topics. - Complete the syllabus if you are starting fresh
If you haven’t covered the syllabus yet, focus on completing it systematically. Follow a structured timetable and prioritize topics according to their weightage in the exam. - Choose the right learning resources
- If you can afford it, purchase a structured online course to get guided preparation and proper direction.
- If you have a tight budget, rely on free YouTube channels that provide quality lectures, tips, and practice questions. Many coaching institutes now share excellent content online at no cost.
Why are Mock Tests and Previous Year Papers Important?
- Previous year papers give you a clear understanding of the question pattern, frequently asked topics, and the weightage of each subject. They help you identify high-scoring areas and topics that appear less frequently.
- Mock tests are crucial for:
- Full syllabus revision in an exam setting
- Checking your speed and accuracy
- Improving time management during the actual exam
- Reducing exam-day anxiety through regular practice
By combining conceptual clarity, previous year paper practice, and mock tests, you can create a solid preparation strategy and significantly improve your chances of success in the IB JIO 2025 exam.
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Is there common paper in technical section
There is no single “common paper” in the technical section for all candidates.
Instead, there are branch-specific question sets aligned with your qualification.
But some question match like EC & CSE & Physics Ex Digital Logic subject So PYQ Useful for similar subject