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Relative humidity is generally expressed in which form?

Answer and explanation

Correct answer: Percentage

Answer: B, percentage. Relative humidity compares the actual water vapour in the air with the maximum water vapour the air could hold at the same temperature. Because it is a comparison, it is normally written as a percentage. A value of 100% means the air is saturated at that temperature; a lower value means the air contains less vapour than its maximum capacity. A, metre, is a unit of length. C, kilogram, is a unit of mass and is not the usual form for reporting relative humidity. D, degree, is commonly used for temperature or angles, not for this moisture ratio. The percentage sign therefore communicates the comparison clearly. Do not confuse relative humidity with absolute humidity, which indicates the actual quantity of water vapour in a given volume of air. Memory cue: relative humidity is a relative comparison, so write it in percent.

Related tags

GeographyRelative HumidityPercentageHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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