Q.

Which of the following cools quickly at night?

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a

Land

b

Cement

c

Water

d

All of these

answer is A.

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Detailed Solution

Land has lower heat capacity and requires less heat to increase its temperature whereas water and cement has higher heat capacity and requires more heat to increase its temperature. Hence land heats up and cools down faster than water and cement.

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Which of the following cools quickly at night?