ISRO ICRB · Scientist/Engineer ‘SC’
ISRO Scientist/Engineer Mock Tests
The 120-minute written test as ISRO sets it: 80 questions from your branch, then the aptitude part. On a screen with a question palette, Mark for Review and a live timer.
Computer Science, Electronics and Mechanical. Mock Test 1 of each branch is free to take.
Exam pattern
Written test at a glance
| Part | Questions | Marks | Marking |
|---|---|---|---|
| A: Discipline (CS, ECE or Mechanical) | 80 | 80 | +1, −1/3 |
| B: Aptitude/Ability | 15 | 20 | 10 × 1 mark, 5 × 2 marks, no negative |
| Total | 95 | 100 | 120 minutes, one timer |
You must score at least 50% in each part (40% for reserved categories) to be shortlisted for interview. Part A questions here are in English. Pattern as in the ICRB advertisement of 2025; always confirm it in the latest advertisement on isro.gov.in.
Branches
Pick your discipline
Computer Science
Data structures, algorithms, OS, networks, databases, theory of computation, architecture, compilers, security and cloud.
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Electronics
Signals and DSP, communication, control, electromagnetics and microwave, analog and digital circuits, devices.
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Mechanical
Strength of materials, thermodynamics, machine design, manufacturing, mechanics, vibrations, fluids.
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How it works
Three steps
- Take Mock Test 1 freeThe full 95-question paper. No sign-up needed to start.
- Save your testAdd your email: it becomes your free account and keeps your test saved.
- Unlock your report for ₹149Your score in each part, the right answers with explanations and where your time went, for Mock Test 1 and every mock test of every branch, part test and topic drill. One-time payment, no expiry date.