Question

Evaporation occurs when molecules escape from a liquid surface into the air above it. During this process the temperature of the liquid falls. Why does the temperature of the liquid fall?
A The molecules in the vapour expand because the pressure is less.
B The molecules left in the liquid have more space to move around.
C The molecules move more slowly when they escape into the air.
D The molecules with the highest energies escape into the air.

Answer 1

according to me option a is correct