Question

tell me what is this plz

Answer 1

Its also known as the cooling phenomenon of evaporation

In simple, when the liquid turns into gas it needs heat to evaporate. ... As the faster-moving molecules escape, the remaining molecules have lower average kinetic energy, and the temperature of the liquid decreases. This phenomenon is also called evaporative cooling. This is whyevaporating sweat cools the human body.

hope its helpful

Answer 2

If we put few drops of any volatile liquids on the palms it evaporates into the atmosphere and we feel palms cool because the liquids evaporate at normal temperature then evaporation takes place and cause cooling