During summer season, water kept in an earthen pot becomes cool because of the phenomenon of :
A
diffusion
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B
transpiration
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C
osmosis
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D
evaporation
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Solution
The correct option is D evaporation An earthen pot (matka) has small pores in it. Water seeps through these pores and reaches the outer surface of the earthen pot. This water then evaporates by taking heat from earthen pot, thereby making it cooler. Thus, option "D" is the correct answer.