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Alluvial soil is formed by the deposition of alluvium brought down by the east-flowing peninsular rivers.

Alluvial soil is highly infertile.

Alluvial soil consists of various proportions of sand, silt and clay.

Alluvial soil is rich in potash, phosphoric acid and lime but deficient in organic matter.

answer is B.

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Detailed Solution

Option 2, i.e., alluvial soil is highly infertile, is incorrect.
Alluvial soil is formed by the deposition of alluvium brought down by the Indus, Ganga, and Brahmaputra river systems in the North and Mahanadi, Godavari, and Kaveri rivers in the eastern coastal plain in southern India. Alluvial soil is made of various proportions of sand, silt and clay. It is very fertile and is rich in potash, phosphoric acid, and lime which are ideal for the cultivation of sugarcane, wheat, paddy, and other cereal and pulse crops. Due to its high fertility, regions of alluvial soils are intensively cultivated and densely populated.

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