Multiple choice

Black Cotton Soil is formed from the weathering of which of the following rocks?

  1. Igneous

  2. Metamorphic

  3. Crystalline

  4. Sedimentary
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A Correct answer
Explanation

Black soil is formed by the weathering of igneous rocks and the cooling of lava after a volcanic eruption. They are mainly found in the Deccan Trap/Deccan Plateau, which includes Maharashtra, Madhya Pradesh, Gujarat, Andhra Pradesh, and parts of Tamil Nadu. These soils have been formed due to the weathering of the lava rocks. This soil is also known as regur soil and black cotton soil. These soils are rich in lime, iron, magnesia and alumina, but lack in the phosphorus, nitrogen and organic matter. 

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