Question

When humidity is expressed as a percentage, it is called
1. percentage humidity 
2. relative humidity
3. specific humidity 
4. absolute humidity 

Answer 1

Correct Answer - Option 2 : relative humidity

The correct answer is relative humidity.

• When humidity is expressed in terms of percentage it is called relative humidity. 
• It means the present state of absolute humidity relative to maximum humidity when taken at the same temperature.
• When relative humidity is 100% that means that air is saturated with water vapour and zero per cent of water vapour is present in the air.
• Humidity means the concentration of water vapour that is present in the air.
• Water vapour is the gaseous state of water and is invisible to the naked human eye.
• The level of humidity depends on dew, precipitation or fog.
• Its level depends on the temperature and pressure of the atmosphere.