Question

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

Answer 1

1. Water placed in earthen pots is evaporated from pores it has as it is made of mud particles.
2. There are a large number of extremely small pores in an earthen pot through which the water kept inside the pot keeps on evaporating.
3. The process of evaporation is the conversion of liquid into a gaseous state.
4. The earthen pot and water hence lose heat and this makes the water inside the pot cool.
5. The vaporization helps water kept in an earthen pot (matka) become cool during summer.