The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called

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The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called

a) Humidity ratio

b) Relative humidity

c) Absolute humidity

d) Degree of saturation

Refrigeration & Air-Conditioning Practice Set-1