Question

Which one will not increase the rate of evaporation of a liquid?

• A. Increase in temperature
• B. Increase in humidity
• C. Increase in surface area
• D. Increase in wind speed

Answer 1

The correct option is B Increase in humidity

The various factors that increase the rate of evaporation of water are:

1. Increase in temperature

2. Increase in exposed surface area

3. Increase in wind speed

So, from the given options, increase in temperature, surface area and wind speed will increase the rate of evaporation. Humidity does not.

Humidity refers to the amount of moisture or water vapour in the air. If the humidity is high and the surrounding air is already saturated with water vapour, air's moisture intake will reduce. Consequently, the rate of evaporation reduces.