MCQ
At high altitudes, water boils at a lower temperature because :
- Athe atmospheric pressure is high at high altitudes
- Bthe viscosity of water is reduced at high altitudes
- ✓the atmospheric pressure is low at high altitudes
- DNone of these
✓
Answer
Correct option: C.
the atmospheric pressure is low at high altitudes
The boiling of water depends on the atmospheric pressure at that altitude. At high altitudes, the pressure is lower, so water can not boil at $100^\circ .$
As the altitude increases, the boiling point of water reduces.
As the altitude increases, the boiling point of water reduces.
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