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If air becomes saturated on cooling, then what can happen next?

Answer and explanation

Correct answer: Condensation can start

Direct answer: A is correct. Saturated air contains as much water vapour as it can hold at its present temperature. If cooling continues, or if extra vapour is added, some vapour can no longer remain in the gaseous state. It changes into tiny liquid droplets or ice crystals; this is condensation. A is correct because saturation followed by further cooling commonly prepares the conditions for condensation, cloud, fog, or dew formation. B is wrong because atmospheric saturation cannot stop Earth’s rotation. C is wrong because condensation does not suddenly dry oceans; evaporation and condensation are opposite parts of the water cycle. D is wrong because mountain disappearance is unrelated to ordinary atmospheric saturation. Saturation does not always guarantee visible droplets immediately, because suitable surfaces or particles and continued cooling may be needed. Memory cue: cool to saturation, then excess vapour condenses.

Related tags

GeographySaturationCondensationHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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