It denotes the amount of water vapour actually present in air as a percentage of maximum amount that could be present at that particular temperature

It represents the ratio of mass of water vapour to the mass of dry air in a given volume of air water vapour mixture

It is the mass of water vapour per unit volume of air water vapour mixture

None of these

Wet bulb temperature

Specific humidity

Dew point temperature

Dry bulb temperature

refrigerant mixture

synthetic refrigerant

an azeotrope

high pressure refrigerant

25

45

30

15

288

3456

24

12