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Why is it necessary to study Bhangar and Khadar in the context of the Ganga plain?

Answer and explanation

Correct answer: They show the difference between older and newer alluvial deposits

The direct answer is A: Bhangar and Khadar show the difference between older and newer alluvial deposits. Alluvium means fine material such as sand, silt and clay brought and deposited by rivers. Step by step, rivers spread sediment across the Ganga plain. Older deposits, which lie above the usual flood level and have existed for a longer time, are called Bhangar. Newer deposits, renewed by floods and found closer to present river channels, are called Khadar. Thus option A correctly connects both terms with river deposition and age. Option B is wrong because Bhangar and Khadar are not glacier layers; glaciers are masses of moving ice. Option C is wrong because they are not kinds of marine coral; coral forms in suitable warm shallow seas. Option D is wrong because they are not names for volcanic ash; volcanic ash comes from eruptions. The important comparison is older alluvium versus newer alluvium, not two rock or ice types. Exam cue: “Bhangar is old, Khadar is new,” and both belong to river-made plains.

Related tags

BhangarKhadarAlluvium

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