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

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SSC CGL 2021 Tier-I (Held On : 20 April 2022 Shift 3)
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  1. Ambient temperature
  2. Area of the free surface of the liquid concerned
  3. Wind speed above the surface of the liquid
  4. Humidity

Answer (Detailed Solution Below)

Option 4 : Humidity
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PYST 1: SSC CGL - English (Held On : 11 April 2022 Shift 1)
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Detailed Solution

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The correct answer is Humidity.

Key Points  

  • The rate of evaporation decreases with an increase in Humidity.
  • The rate of evaporation mainly depends on these factors:
    • Temperature: The rate of evaporation increases with an increase in temperature.
    • Surface area: The rate of evaporation increases with an increase in surface area.
    • Humidity: The amount of water vapour present in the air is called humidity.
    • The rate of evaporation decreases with an increase in humidity.
    • Wind speed: Evaporation increases with an increase in wind speed.

Additional Information

  • Ambient Temperature:
    • Ambient temperature is the air temperature of any object or environment where equipment is stored. 
  • Evaporation:
    • It is the process of changing of a liquid into water vapour below its boiling point.
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