Sample questions
You've seen the pattern — here are a few of the actual PYQs.
NDA2023
Which of the hydrocarbons are arranged as per the increasing order of their boiling points?
- A Methane, Butane, Propane, Heptane
- B Propane, Butane, Pentane, Octane ✓
- C Propane, Butane, Heptane, Methane
- D Octane, Ethane, Methane, Propane
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
NDA2022
A pressure cooker cooks food faster by
- A increasing the boiling point of water ✓
- B decreasing the boiling point of water
- C increasing the melting point of water
- D decreasing the melting point of water
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
Study how UPSC repeats — not just the papers
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