Question

Water in an earthen pot cools below the room temperature due to.

A
Absence of radiation
B
Evaporation of water from the surface of the pot
C
Insulation
D
Absence of convection
Solution
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In an earthen port, water gets evaporated quickly through the pores. Cooling is caused by evaporation. Some heat energy is utilised during the process of evaporation. Since this energy is taken from water itself, it leads to lowering of temperature in the remaining amount of water.

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