INDIAN GEOGRAPHY

Detailed explanation-1: -Answer: Black soil or Black Cotton Soil, also known as Regur are mineral soils that are volcanic/ trap lava derivatives. They are found mostly in the Deccan Plateau of India. They are formed due to the weathering and denudation of indigenous rocks (basalt) or cooling and solidification of lava after volcanic eruption.

Detailed explanation-2: -Black soils are made up of volcanic rocks and lava-flow. It is concentrated over Deccan Lava tracts which includes parts of Maharashtra, Chhattisgarh, Madhya Pradesh, Gujarat, Andhra Pradesh and Tamil Nadu.

Detailed explanation-3: -So the correct answer is (D) Black. Black soil is formed by solidification of lava.

Detailed explanation-4: -Black soils are derivatives of trap lava and are spread mostly across interior Gujarat, Maharashtra, Karnataka, and Madhya Pradesh on the Deccan lava plateau and the Malwa Plateau, where there is both moderate rainfall and underlying basaltic rock.

Detailed explanation-5: -Black soil is formed by the weathering or breaking of igneous rocks and also by the cooling or solidification of lava from the volcano eruption. Therefore, it is also called lava soil. This soil is formed from rocks of cretaceous lava and is formed from the volcano eruption.