Red soil develops on crystalline igneous rocks in areas of low rainfall. Its reddish colour is mainly due to:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → the diffusion of iron in the rocks
Red soil gets its reddish colour from the diffusion of iron in crystalline and metamorphic rocks. Where the iron occurs in a hydrated form, the same soil looks yellow, so these soils are grouped as red and yellow soils.