Question
Black soils popularly known as “Black cotton soils”
are high in clay content and these soil develop wide cracks during the dry season but their iron rich granular structure makes them resistant to wind and water erosion. These soils are associated with which type of rocks?Solution
Black Soils: These soils are used for growing Cotton in states of Gujrat, Maharastra, Karnataka and Madhya Pradesh. They react well to irrigation because they have low humus yet are extremely moisture-retentive. Black soils are made up of volcanic rocks and lava-flow.
Which of the following statements is/are true?
Statement A: Mica and biotite are the secondary minerals but also act as primary minerals.
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