A) Is the ratio of the weight of moist vapour (gms) to the weight of moist air (kgs)
B) It is the mass or weight of vapour per unit volume of air
C) It is defined as the ratio of the amount of water vapour actually present in the air having definite volume and temperature (Absolute humidity) to the maximum amount the air can hold
D) None of the statements given above are correct in explaining Specific Humidity
Correct Answer: A
Solution :[a] Exp: Specific Humidity: Is the ratio of the weight of moist vapour (gms) to the weight of moist air (kgs). Represents the actual quantity of moisture in a definite air. It decreases from equator to poles. In Arctic it is 0.2 gm/kg, while in equatorial region, it is 18 gm/kg. It is used in Climatology.
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