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What is the main comparative reason for low rainfall in western Rajasthan and high rainfall in Assam during monsoon?

Answer and explanation

Correct answer: Assam receives moisture and orographic uplift, while western Rajasthan has less moisture and effective uplift

The direct answer is B: Assam receives abundant moisture and strong orographic uplift, while western Rajasthan receives less effective moisture and uplift. The Bay of Bengal branch carries moist air toward northeastern India. The hills and mountains around Assam force this air upward, causing condensation and heavy rain. Western Rajasthan is far inland, so the winds have travelled a long distance and lost much moisture. The Aravalli range is also not arranged across the main monsoon flow in a way that produces strong uplift there. Option B correctly compares both regions. Option A is wrong because equal distance is not the main fact. Option C is wrong because Rajasthan is not the source of the Bay branch. Option D is wrong because Assam is one of the wettest areas, not a rain-shadow desert. Exam cue: Assam equals moisture plus uplift; western Rajasthan equals inland dryness and weak uplift.

Related tags

ClimateIndian MonsoonAssam Rajasthan

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