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Question

How does the melting point of ice change with a change in atmospheric pressure?

A

Increases with increasing pressure

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B

Decreases with increasing pressure

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C

Is independent of atmospheric pressure

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D

Increases with decreasing pressure

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Solution

The correct option is B

Decreases with increasing pressure


Melting point of ice decreases with increase in pressure because as presure increases the molecules of ice try to maintain the ratio by decreasing their volume. Since water has lesser volume than ice, ice tends to turn into water to lower its volume. That's why the melting point of ice decreases as pressure increases.


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