Discussion :: Physics
- Water boils at a lower temperature on the hills because
|
A.
It is cold on the hills |
|
B.
There is less carbon dioxide on the hills |
|
C.
There is a decrease in air pressure on the hills |
|
D.
There is less oxygen |
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Answer : Option C
Explanation :
The boiling point of water is lower at higher altitudes due to the decreased atmospheric pressure. A liquid boils when its vapour pressure exceeds the local total pressure. As the atmospheric pressure drops, the Vapour pressure increases more than the local pressure at an even lower temperature.
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