Assertion the boiling point of water decreases as the altitude increases Reason the ...........

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Assertion: the boiling point of water decreases as the altitude increases

Reason: the atmospheric pressure increases with altitude

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is not the correct explanation of A

A is true but R is false

R is true but A is false

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Explanation:

Because the atmospheric pressure is lower, the vapour pressure of the liquid needs to be lower to reach boiling point. Therefore, less heat is required to make the vapour pressure equal to the atmospheric pressure. The boiling point is lower at higher altitude.