What is the characteristic of black soil, which shows slow absorption and loss of moisture and retains it for a long time, called?

In which of the following regions of India, black soil is found ?

Which one of the following is the main cause of soil erosion in arid and semi-arid regions of India?

Which one of the following soils is characterized by very high content of organic matter?

Which of the following soil is most suited for tea plantation?

Which one of the following is not a soil forming factor ?