How does the water kept in an earthen pot (matka) become cold during summer?

 The water kept in an earthen pot seeps into the small pores in the pot and evaporates from the surface of the pot. The heat required for evaporation is taken from the water inside the pot, thus cooling the water stored inside. This is the reason why on hot summer days water remains cool in the earthen pot.

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Updated on: 15-Mar-2023

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