Sample questions
You've seen the pattern — here are a few of the actual PYQs.
NDA2023
Which among the following is the popular method for manufacture of ammonia?
- A Ostwald's process
- B Haber-Bosch process ✓
- C Electric furnace process
- D Electrolysis process
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
NDA2023
For manufacturing of glass, which among the following is used as a source of silica?
- A Fine clay soil
- B Wood powder
- C Coconut shell
- D Sand ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
NDA2021
Which one of the following is not used as a raw material in the manufacture of glass ?
- A Soda
- B Alumina
- C Borax
- D Gypsum
Answer key not yet available (pending official release)
Science & Technology › Physics & Chemistry
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