1.

Distinguish the Absolute and relative humidity.

Answer»

Absolute humidity:

  • Mass or weight of water vapour present per unit volume of air.
  • Expressed usually in grams per cubic metre of air. 

Relative humidity:

  • Ratio between the actual amount of water vapour present in the air and the maximum amount of water vapour it can hold at a given temperature. 
  • Expressed as a percentage.


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