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Convectional rainfall mostly forms under which conditions?

Answer and explanation

Correct answer: Warm, moist surface and rising air

Answer: B, a warm, moist surface with rising air. Strong heating of the land or water surface warms the air touching it. Warm air is less dense than surrounding cooler air, so it rises by convection. As it rises, it expands and cools. If enough moisture is present, cooling causes condensation, cloud formation, and eventually rain. A is wrong because a cold, dry surface supplies little heat or moisture and stable air discourages uplift. C is wrong because frost and dry air indicate cold conditions, not the usual source of convective rain. D is wrong because a mountain shadow is associated with relief effects and rain-shadow conditions, not the basic requirement for convectional rainfall. Cue: “heated surface, rising column, cooling, rain.”

Related tags

Convectional RainfallRising AirSurface HeatingClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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