ISRO ICRB Exam Syllabus 2025 – Mechanical, Electronics & CS Topics, Pattern PDF
Prepare for the ISRO ICRB Scientist/Engineer SC Exam 2025 with the latest syllabus. Get detailed subject-wise topics for Mechanical, Electronics, and Computer Science, updated exam pattern, marks distribution, and direct PDF download link. Ideal for GATE aspirants too.
The Indian Space Research Organisation (ISRO), through the ISRO Centralised Recruitment Board (ICRB), conducts one of the most prestigious exams in India for recruiting scientists and engineers. Every year, thousands of engineering graduates appear for this exam with the dream of joining India’s premier space research organization. If you’re planning to appear for the ISRO ICRB Exam 2025, understanding the latest syllabus, topics, marks distribution, and preparation strategy is essential for success.
This comprehensive guide covers everything about the ISRO ICRB Syllabus 2025, including exam structure, detailed subject-wise topics, syllabus PDF, recommended books, and more.
The ISRO ICRB exam is a competitive recruitment exam for selecting Scientists/Engineers ‘SC’ in various engineering streams including Mechanical, Electronics, and Computer Science. It evaluates a candidate’s technical knowledge, analytical abilities, and problem-solving skills to work in high-precision, R&D-based environments.
The exam is highly competitive and requires a deep understanding of engineering fundamentals, often tested at a GATE level but with a unique ISRO-centric focus.
ISRO ICRB Exam Overview 2025
| Feature | Details |
|---|---|
| Exam Conducting Body | ISRO Centralised Recruitment Board (ICRB) |
| Post | Scientist/Engineer ‘SC’ |
| Streams | Mechanical, Electronics, Computer Science |
| Mode of Exam | Offline (Pen & Paper) |
| Number of Questions | 80 Questions |
| Total Marks | 240 Marks |
| Time Duration | 90 Minutes |
| Negative Marking | No negative marking |
| Interview Weightage | 100 Marks (after written test) |
| Official Website | https://www.isro.gov.in |
ISRO ICRB Exam Pattern 2025
| Section | Number of Questions | Marks | Duration |
|---|---|---|---|
| Technical (Branch-specific) | 80 | 240 | 90 Minutes |
Each question carries 3 marks. All questions are objective-type (MCQs). There is no negative marking, which is a major advantage compared to GATE. Candidates are shortlisted for an interview based on performance in the written exam.
ISRO ICRB Syllabus 2025 – Branch-Wise Detailed Topics
Mechanical Engineering Syllabus
| Topics | Description |
|---|---|
| Thermodynamics | Laws, entropy, enthalpy, processes, heat transfer, IC engines |
| Fluid Mechanics | Flow types, Bernoulli’s theorem, dimensional analysis |
| Heat Transfer | Conduction, convection, radiation, heat exchangers |
| Strength of Materials | Stress-strain, bending, shear, torsion, Mohr’s circle |
| Theory of Machines | Mechanisms, cams, gears, flywheels, governors |
| Machine Design | Design principles, failure theories, joints, fatigue |
| Manufacturing Engineering | Casting, forming, machining, CNC, metrology |
| Industrial Engineering | Operations research, inventory, quality control |
| Engineering Mechanics | Statics, dynamics, friction, centroid, kinematics |
Electronics Engineering Syllabus
| Topics | Description |
|---|---|
| Network Theory | KVL, KCL, Thevenin, Norton, resonance, transient analysis |
| Signals and Systems | Fourier, Laplace, z-transforms, sampling, modulation |
| Control Systems | Block diagrams, stability, frequency response |
| Digital Electronics | Boolean algebra, logic gates, flip-flops, counters, FSM |
| Analog Circuits | Op-amps, amplifiers, oscillators, filters, diodes, BJTs, FETs |
| Communication Systems | AM, FM, PCM, noise, antennas, bandwidth |
| Electromagnetics | Maxwell’s equations, waveguides, transmission lines |
| Microprocessors | 8085/8086 architecture, instruction sets, I/O interfacing |
Computer Science Engineering Syllabus
| Topics | Description |
|---|---|
| Programming & Data Structures | C/C++, recursion, arrays, stacks, queues, trees, graphs |
| Algorithms | Time complexity, sorting, searching, greedy, dynamic |
| Operating Systems | Processes, scheduling, memory management, file systems |
| Database Management Systems | SQL, normalization, indexing, transactions |
| Computer Organization | CPU, memory, pipelining, cache, assembly language |
| Theory of Computation | DFA, NFA, regular expressions, Turing machines |
| Software Engineering | SDLC, UML, testing, project models |
| Networking | OSI model, TCP/IP, protocols, IP addressing, routing |
Download ISRO ICRB Syllabus PDF
You can download the complete ISRO ICRB Syllabus 2025 PDF for all branches below:
Download PDF – ISRO ICRB Syllabus 2025
Recommended Books for ISRO ICRB Exam
| Branch | Book Title | Author/Publisher |
|---|---|---|
| Mechanical | Mechanical Engineering (Objective) | R.S. Khurmi |
| Mechanical | Theory of Machines | S.S. Rattan |
| Electronics | Electronic Devices & Circuits | Boylestad & Nashelsky |
| Electronics | Network Analysis | Van Valkenburg |
| Computer Science | Data Structures and Algorithms | Narasimha Karumanchi |
| Computer Science | Operating Systems | Galvin |
| General | ISRO Previous Year Papers | Made Easy / GKP |
Preparation Tips for ISRO ICRB 2025
- Know the Syllabus Thoroughly: Stick to your core engineering concepts.
- Solve Previous Year Papers: Identify frequently asked topics.
- Time Management: Practice 80 questions in 90 minutes.
- Revise Formulas: Maintain a quick-revision sheet.
- Take Mock Tests: Simulate real exam conditions.
- Prepare for Interviews: Focus on technical fundamentals.
Specialization & Career Scope at ISRO
| Stream | Possible Specializations |
|---|---|
| Mechanical | Propulsion, Thermal, Structures, Robotics |
| Electronics | Satellite Communication, Navigation Systems |
| Computer Science | AI/ML, Embedded Systems, Software Development |
Conclusion
The ISRO ICRB Syllabus 2025 is designed to test your conceptual clarity in core engineering subjects. With consistent practice, the right books, and a smart preparation strategy, you can crack this prestigious exam. Start early, stick to the syllabus, and stay motivated. ISRO not only offers a great career but also the chance to contribute to India’s space missions.
FAQs
- Q1. What is the syllabus level of ISRO ICRB? The syllabus is based on undergraduate engineering curriculum, similar to GATE but more concept-focused.
- Q2. Is there negative marking in ISRO ICRB? No, there is no negative marking.
- Q3. Is ISRO ICRB tougher than GATE? GATE is more analytical, ISRO is fast-paced with concept-driven questions.
- Q4. Can final year students apply? Yes, if eligible at the time of document verification.
- Q5. Is GATE score required for ISRO ICRB? No, ISRO conducts its own separate exam.
