UPSC Civil Services Model Paper 4

These soils are generally poor in phosphoric contents . So, option 1 is NOT correct.
It is however rich in soil nutrients, such as calcium carbonate, magnesium, potash, and lime.
The black soils are made up of extremely fine i.e. clayey material. They are well- known for their capacity to hold moisture. So, option 2 is NOT correct and option 3 is correct.
It is typical of the Deccan trap (Basalt) region spread over the northwest Deccan plateau and is made up of lava flows. So, option 4 is NOT correct.