Evaporation causes cooling because during evaporation the particle of the liqued absord energy from the surroundings to regain the energy lost during evaporation. the absorbtion of heat from the surrounding makes the surrounding cool.
Ex : when we spray a deo on our hand.
Ex 2 : Aetone
Reason for the above examples : the deo and the nail poslish romover are volatile substance. they absorb latent heat of vaporisation from aur hand and gets converted rapidly into gaseous form. henece we feel cold.

Evaporation is a process in which a liquid substance changes into a gas, and this process requires energy. The energy that is required for the liquid molecules to escape into the air is taken from the surrounding environment, which leads to cooling of the remaining liquid. This is the reason why we feel cooler when we sweat or when we step out of the shower.

How does evaporation cause cooling?

1. Energy is required: When a liquid substance is heated, the kinetic energy of the molecules increases, leading to an increase in the rate of evaporation. Evaporation requires energy to break the intermolecular forces that hold the liquid molecules together.

2. Energy transfer: The energy required for evaporation is taken from the surrounding environment, which leads to a decrease in temperature. This energy transfer occurs as the high-energy molecules escape from the liquid and enter the air.

3. Cooling effect: The remaining liquid molecules have a lower kinetic energy and temperature, leading to a cooling effect. This is the reason why we feel cool when we sweat, as the sweat on our skin evaporates and takes away the heat from our bodies.

4. Humidity: The rate of evaporation is affected by the humidity of the surrounding environment. If the air is already saturated with water vapor, the rate of evaporation will be slower, and the cooling effect will be less noticeable.

In conclusion, evaporation causes cooling because it requires energy, and this energy is taken from the surrounding environment, leading to a decrease in temperature. The cooling effect is more noticeable when the humidity is low, and the rate of evaporation is higher.