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Which of the following is/are the factors affecting evaporation?
1. Humidity of air
2. Wind speed
3. Surface area of the liquid
4. All of the above

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Correct Answer - Option 4 : All of the above

The correct answer is 4 i.e. All of the above.

Evaporation:

  • The process of the liquid changing into vapor even below its boiling point is called evaporation.
  • Whatever be the temperature at which evaporation takes place, the latent heat of vaporization must be supplied whenever a liquid changes into a vapor.
  • The factors affecting evaporation are explained below:
    Factors  Explanation
    Humidity of air
    • The rate of evaporation increases by increasing the temperature of the liquid.
    • The rate of evaporation of a liquid can be increased by heating it.
    • It becomes maximum at its boiling point.
    Wind speed
    • The rate of evaporation of liquid increases with increasing wind speed.
    • When it increases, the particles of water vapor moves away with the wind, decreasing the amount of water vapor in the surroundings. 
    Surface area of the liquid
    • The rate of evaporation increase in increasing the surface area of the liquid.
    • This is because of the more exposure of the water in the air.
    Temperature
    • The rate of evaporation increases by increasing the temperature of the liquid.
    • The rate of evaporation of a liquid becomes maximum at its boiling point.

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