Question

Collect three samples of water in three different glasses and tell which one is having coldest water?
→Normal water from a plastic container.
→water from an earthern pot
→Water from an earthern pot which has been covered with a wet sack for 5 -6 hours

Answer 1

water from an earthern pot have cool water as here evaporation is taking place....
water is evaporated from the pot using the heat present in the surrounding.