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Consider the following statements with reference to evaporation : 1. Rate of evaporation decrease with an increase in surface area. 2. Rate of evaporation increases with an Increase in temperature. 3. Rate of evaporation decreases with an increase in humidity. 4. Rate of evaporation increases with an increase in wind speed. Which of the above statement are correct?

Consider the following statements with reference to evaporation : 1. Rate of evaporation decrease with an increase in surface area. 2. Rate of evaporation increases with an Increase in temperature. 3. Rate of evaporation decreases with an increase in humidity. 4. Rate of evaporation increases with an increase in wind speed. Which of the above statement are correct? Correct Answer 2, 3 and 4 only

The correct answer is 2, 3 and 4 only.

Key Points

  • Evaporation:
    • The phenomenon of change of a liquid into vapours at any given temperature below its boiling point is called Evaporation. 
Rate of Evaporation Condition Reason
Increases Increase in Surface Area Particles have more space and thus can evaporate easily
Increases Increase in temperature Kinetic energy among the particles increases
Decreases Increase in humidity Water content in air increases and so evaporation decreases
Increases Increase in wind speed Water vapours are blown away by winds allowing more evaporation

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