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SSC CGL 2022 PYQ — Question 38

SSC CGL - 20 April 2022 - Shift 3 • General Awareness • Q38

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Decrease in which of the following factors leads to an increase in the rate of evaporation?

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Correct answer: D

Explanation

The correct answer is option 4 i.e. Humidity

  • Decrease in humidity leads to an increase in the rate of evaporation.
  • Evaporation can be defined as the process through which a liquid is converted into a gas/vapour without being heated to its boiling point. The key factors that affect the rate of evaporation of a liquid are:
  1. Temperature- The greater the temperature of the liquid and its surroundings, the faster the rate of evaporation.
  2. Surface area occupied by the liquid- Since evaporation is a surface phenomenon, the greater the surface area occupied by the liquid, the quicker it undergoes evaporation.
  3. Humidity of the surroundings- The greater the humidity of the atmosphere surrounding the water, the slower the rate of evaporation.
  4. Air circulation or wind speed- The presence of a breeze or another source of air circulation directly contributes towards the rate of evaporation.