Question

Which of the following does not accelerate evaporation?

• A. Large surface area
• B. Wind
• C. Increase in temperature
• D. High Humidity

Answer 1

The correct option is D

High Humidity

Explanation for the correct option:

• Evaporation is the change of a liquid into a vapor at a temperature below the boiling point.
• It is slow and reversible change.

(D) High Humidity:

• Humidity is the moisture holding capacity of air at a given temperature.
• Dried air evaporates more water than humid air.
• For example, in the rainy season, wet clothes do not dry easily.

Explanation for the Incorrect options:

(A) Large surface area: The area of the exposed surface determine the rate of evaporation. A Larger surface area increases the rate of evaporation.

(B) Wind: Evaporation depends on the wind speed. Wind increases the rate of evaporation. For example, when you dry hair in front of a table fan, hair dries faster.

(C) Increase in temperature: Higher the temperature means more energy is available to the water molecule for converting from the liquid to the gaseous state. For example, wet clothes dry faster in the summer season.

Thus, Option (D) is the correct answer.