Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CISF2023
Which one of the following is the energy source of stars?
- A Nuclear fission
- B Nuclear fusion ✓
- C Chemical reaction
- D Photochemical reaction
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
CSE2016
India is an important member of the 'International Thermonuclear Experimental Reactor'. If this experiment succeeds, what is the immediate advantage for India?
- A It can use thorium in place of uranium for power generation
- B It can attain a global role in satellite navigation
- C It can drastically improve the efficiency of its fission reactors in power generation
- D It can build fusion reactors for power generation ✓
✓ Correct answer: (D)
Science & Technology › Energy & Nuclear
Study how UPSC repeats — not just the papers
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