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When does the capacity of rivers to deposit silt increase in the Northern Plains?

Answer and explanation

Correct answer: When river speed decreases after entering the plains

Answer: A. A river can carry sediment only while it has enough energy and speed. When a Himalayan river leaves steep mountain slopes and enters the gentler Northern Plains, its gradient and velocity generally decrease. With less transporting power, the river begins to drop heavier particles first and may later deposit finer silt across its floodplain. A is correct because reduced speed means reduced carrying capacity and greater deposition. B is wrong because a river does not become a glacier; glaciers are masses of ice. C is wrong because complete drying is not the general geographical condition described and does not explain normal floodplain deposition. D is wrong because rivers flow downslope rather than climbing straight up a mountain. Memory cue: fast water carries; slow water deposits.

Related tags

River DepositionSiltNorthern PlainsRiver VelocityThe Northern PlainsPhysical Features Of IndiaGeographyClass 9 Mcq

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