Question

From the following which are the factors affecting the rate of evaporation?

• A. Temperature
• B. Humidity
• C. Exposed Surface Area
• D. All of the above

Answer 1

The correct option is D All of the above

1. Temperature - If we increase the temperature of a liquid, its molecules get more kinetic energy and more molecules will come out rapidly from the surface of liquid i.e. rate of evaporation increases.

2. Humidity - Humidity is measurement of amount of vapour present in air. If humidity is high, it will be difficult for liquid to add more vapour in air as there is already high amount of vapour, therefore with increase in humidity, rate of evaporation decreases and vice- versa.

3. Exposed surface area - If exposed surface area is increased, more liquid molecules come on the surface, as evaporation is a surface process, therefore rate of evaporation increases.

Hence, all these factors affect the rate of evaporation.