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Why do wet clothes dry faster in dry air?

Answer and explanation

Correct answer: Dry air can take more water vapour

Correct answer: C. Dry air contains relatively little water vapour compared with the amount it could hold at that temperature. Therefore, there is a larger difference between the vapour concentration at the wet cloth and in the surrounding air. This difference allows more water molecules to escape from the cloth into the air, so evaporation proceeds faster. Moving air and warmth can also increase drying, but the question asks specifically about dry air. A is wrong because air colour does not explain evaporation. B is wrong because dry air does not simply stop pressure. D is wrong because blocking light has no connection with the basic reason. A useful memory cue is: dry air has more ‘space’ for moisture, whereas humid air is already moisture-rich and slows evaporation.

Related tags

GeographyDry-AirEvaporationHumidityAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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