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In which situation is cyclonic rainfall more likely?

Answer and explanation

Correct answer: When different air masses meet

Correct answer: A, when different air masses meet. Cyclonic or frontal rainfall is associated with a low-pressure system and the meeting of air masses with different temperatures and often different densities. The warmer air is forced to rise over or alongside the colder, denser air. Rising air expands, cools, and may reach saturation; condensation then forms clouds and precipitation. A is correct because air-mass convergence and uplift provide the necessary setting. B is wrong because melting rock is a geological process. C is wrong because a dry sea is not the defining cause of cyclonic rain. D is impossible for rainfall because water vapour and moving air are required. Memory cue: fronts meet, warm air rises, clouds and rain develop.

Related tags

Cyclonic RainfallAir MassesFrontal RainfallClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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