The largest soil group in India (by area) is:

Correct option is C

· Alluvial soils cover ~46% of India’s total land area, the largest soil group.
· Found in Indo-Gangetic Plains: Punjab, Haryana, UP, Bihar, West Bengal, Assam.
Why other options are wrong
· (a) Black soils ~16%.
· (b) Red soils ~18–20%.
· (d) Desert soils ~6–7%.