Question

In hot summer we use earthen pot to drink cold water. Why?

Answer 1

In hot summer days we use earthen pot to drink cold water because tiny pores are present in the surface of earthen pot
through which high concentrated molecule of water released by endothermic pressure and low concentrated water molecule present in water which is cold.

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Answer 2

Water looses its temperature through small pores present in the pot. Hence in an earthen pot (matka) become cool during summer.