Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CSE2001
A radioactive substance has a half-life of four Months. Three fourth of the substance would decay in
- A 3 months
- B 4 months
- C 8 months
- D 12 months
Answer key not yet available (pending official release)
Science & Technology › Energy & Nuclear
CSE1994
The half-life of a radio active element is 5 years. The fraction of the radioactive substance that remains after 20 years
- A 1/2
- B 1/4
- C 1/8
- D 1/16 ✓
✓ Correct answer: (D)
Science & Technology › Energy & Nuclear
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