Defense
Exam Guide
ISRO Scientific Assistant Preparation Guide
90 mins•60 questions•defense Exam
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Read, plan, practise.
ISRO Scientific Assistant Preparation Guide 2026
Overview
ISRO Scientific Assistant practice tests in Physics, Mathematics, and Chemistry, with previous-paper style sets for subject-focused preparation. It is aimed at ISRO aspirants, with a medium difficulty level.
Exam Pattern
| Section | Questions | Duration | Negative Marking |
|---|---|---|---|
| Observed full-length practice paper | 60 | 90 min | None |
Total: 60 questions in 90 minutes.
Detailed Syllabus
- Physics
- Mathematics
- Chemistry
- Previous Papers
- SDSC
- VSSC
Marking Scheme
- Correct answer: +3 marks
- Wrong answer: 0 marks
- Unanswered: 0 marks
Preparation Strategy
- Map Every Section to Time: ISRO Scientific Assistant splits 60 questions across 1 section in 90 minutes — decide a per-section time budget before test day so no single section eats your buffer.
- Prioritize the Syllabus by Weight: Focus first on Physics and Mathematics, then move to Chemistry, Previous Papers, SDSC, VSSC — these are the subjects tested in the actual paper structure.
- Respect the Negative Marking: A wrong answer costs 0 mark(s), so only attempt a question when you can eliminate at least two options — guessing blind against this penalty is a net loss over a full paper.
- Simulate the Real Timer: Take full-length 90-minute mock tests on YourMockTest under exam conditions before attempting the real ISRO Scientific Assistant — pacing under pressure is a separate skill from knowing the syllabus.
- Review Every Mistake: After each mock, spend more time reviewing wrong answers than attempting new questions — a repeated mistake in practice is a guaranteed mistake in the real exam.
Ready to execute?
Move from syllabus to timed practice.
Now that you are familiar with the structural blueprint, take a full-length mock test to establish your benchmark speed, accuracy, and section-switching metrics.
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