Question

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60. (a) What is evaporation ? State the various factors which affect evaporation,
(b) Why does evaporation cool a liquid ?​

Answer 1

Answer:

A. The process in which the liquid form is changed into vapour is called evaporation.

Affect of evaporation :-

Humidity

Wind Speed

B. When the evaporation occurs then the liquid mostly water absorbs all the heat from the surroundings and take the heat with it.

Answer 2

Answer:

The rate of evaporation is affected by, (1) Temperature: Evaporation increases with an increase in temperature. (2) Surface Area: Evaporation increases with an increase in surface area. (3) Humidity: Evaporation decreases with an increase in humidity. (4) Wind speed: Evaporation increases with wind speed.

Explanation:

Evaporation takes place when a liquid turns into a gas. Evaporation is also known as vaporization. Vaporization usually happens on the surface of the water. ... Vaporization also depends on factors like temperature, humidity, pressure, wind speed, and surface area.