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If air temperature is far above the dew point, why is immediate condensation less likely?

Answer and explanation

Correct answer: Because air is far from saturation

Answer: A. The dew-point depression is the difference between air temperature and dew-point temperature. When air temperature is far above its dew point, it would need substantial cooling before reaching saturation. At that moment, relative humidity is generally lower than it would be near the dew point, so immediate condensation is less likely. If the air cools sufficiently, reaches the dew point, and has suitable condensation nuclei, condensation may then begin. A is correct because the temperature gap indicates distance from saturation. B is wrong because water vapour can become liquid through condensation. C is wrong because dew point is closely related to moisture and relative humidity. D is wrong because higher temperature often increases the saturation capacity and does not always increase condensation. Memory cue: small temperature–dew-point gap means moist air; large gap means drier air.

Related tags

Temperature Dew Point SpreadCondensationHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereGeographyClass 12 Mcq

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