Which of the following statements regarding red soils of India is/are correct?
1. The colour of the soil is-red due to ferric oxide content.
2. Red soils are rich in lime, humous and potash.
3. They are porous and have friable structure.
A. 1 only
B. 1 and 3 only
C. 2 and 3 only
D. 1, 2 and 3
Answer: Option B

This soil is deficient in nitrogen, humus, phosphoric acid, magnesium, and lime but fairly rich in potash