Question

How does water kept in an earthen pot (matka)become cool during summers?

Answer 1

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

Answer 2

$\large\red{\textbf{\underline{\underline{Here\:is\:your\:Answer :- }}}}$

An earthen pot is porous in nature. These tiny pores facilitate penetration of water and hence their evaporation from the pot surface. The process of evaporation requires energy which is contributed by water in the pot as a result of which water turns cooler.

Hope it Helps !!