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In which condition may rainfall not reach the ground even after cloud formation?

Answer and explanation

Correct answer: When the lower air is very dry and the droplets evaporate

Direct answer: B. A cloud may contain droplets or ice particles, but falling precipitation must pass through the air below the cloud. If this lower layer is very dry, the falling droplets can evaporate before reaching the ground; this is called virga when the precipitation disappears below the cloud. A is wrong because larger droplets are more likely to survive and reach the ground, although other processes still matter. C is wrong because 100% relative humidity indicates saturation and does not by itself prevent rainfall. D is wrong because condensation nuclei help cloud droplets form. B correctly identifies evaporation in dry sub-cloud air. Memory cue: always inspect the air between the cloud and the ground.

Related tags

GeographyEvaporationPrecipitationCloudsHumidityAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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