Q. Consider the following statements with respect to ‘Humidity’:
1.Humidity is a measurement of the amount of water vapour in the air. 
2.The higher the relative humidity of air, the less it is filled with moisture.
3.Absolute humidity is equal to the mass of the moisture divided by the mass of air.
Which of the statements given above is/are correct?

[A] 1 only

[B] 1 and 2 only

[C] 3 only

[D] 1 and 3 only

Answer: A
Notes:

Explanation –

Statement 1 is correct. Humidity is a measurement of the amount of water vapour in the air.

Statement 2 and 3 are incorrect. The higher the relative humidity of air, the more it is filled with moisture. Absolute humidity is the mass of water vapour in a given volume of air and water vapour mixture expressed as kg/m3.

Source: ForumIAS