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If temperature increases while the absolute humidity of air remains constant, what happens to relative humidity?

Answer and explanation

Correct answer: Relative humidity will decrease

Correct answer: B. Absolute humidity describes the actual amount of water vapour present in a given volume of air. Relative humidity compares that actual amount with the maximum amount the air could hold at its current temperature. Warm air can hold more water vapour before saturation. Therefore, if the actual vapour amount stays constant while temperature rises, the saturation capacity increases but the numerator does not; the relative-humidity percentage falls. A would be expected if moisture increased sufficiently or temperature decreased. C ignores the temperature-dependent holding capacity. D is too extreme: the value may decrease, but it does not automatically become zero. Memory cue: same vapour plus warmer air means a lower percentage of saturation.

Related tags

Relative-HumidityAbsolute-HumidityTemperatureHydrological CycleThe Living WorldBiologyClass 11 Mcq

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