Answer» Correct Answer - Option 4 : C
The correct answer is the Presence of ferric oxide. - The presence of ferric oxide is the reason for the color of soil being red in some parts of India.
- Red Soil:
- Formed by weathering of a crystalline and metamorphic mixture of clay and sand.
- They are red in color because of their high Iron-oxide (FeO) content.
- They are deficient in phosphoric acid, organic matter, and nitrogenous material.
- Red soils cover the eastern part of the peninsular region comprising Chhotanagpur plateau, Odisha, eastern Chhattisgarh, Telangana, the Nilgiris, and Tamil Nadu plateau.
- Crops Grown: Wheat, Rice, Millets, Pulses.
- Laterite Soil:
- The Laterite soils are formed due to the weathering of lateritic rock in high temperatures and heavy rainfall with an alternate dry and wet period.
- They are found along the edge of the plateau in the east covering small parts of Tamil Nadu, Orissa, and a small part of Chhotanagpur in the north and Meghalaya in the north‑east.
- Laterite soils are red in color with a high content of iron-oxides; poor in Nitrogen and Lime.
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