Sample questions
You've seen the pattern — here are a few of the actual PYQs.
NDA2022
Which one of the following metals is most commonly used for making filament of incandescent electric bulbs?
- A Aluminium
- B Silver
- C Copper
- D Tungsten ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
NDA2020
In an incandescent electric bulb, the filament of the bulb is made up of which metal ?
- A Aluminium ✓
- B Copper
- C Tungsten
- D Silver
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
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