Multiple choice

What is the measure of moisture in air called?

  1. Temperature

  2. Rainfall

  3. Humidity

  4. Snowfall

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The composition of air is CO2, N2, O2, traces of some other gases and water vapours. More the water vapours in the air, more the moisture content. The measure of water vapour in the air is known as humidity.