Question

we use the pots in the summer season . why does the water kept i pot remain cool?

Answer 1

The walls of an eathen pot are porous,which leads to seepage of water. It is the main reason you will find the outside wall wet. Now the water which comes to the outside surface though seepage gets evaporated.For evaporation to happen, there is a factor called latent heat of evaporation,i.e. it must absorb some heat to change its material state from liquid to gaseous one. So it absorbs the heat from the water inside the pot to change its state. Now the water losing heat energy consequently looses temperature making it cooler than the atmospheric temperature. That is why water remains cool in an earthen pot.

Answer 2

Because in pots the can lose from pots because it is made up of sand and that Lose water evaporate in air and so it cause cold air and water remain cool