Explanation:

 Zonal soils are those which occur over large areas or climatic zones having geographical characteristics of their own, sited on well-drained undulating land, having well-developed profiles and other properties, developed on parent material which has remained in its original place for a sufficiently long time to have been affected by climatic and organism processes.

Red soils denote the third largest soil group of India covering an area of about 3.5 lakhs sq. km (10.6% of India's area) over the Peninsula from Tamil Nadu in the south to Bundelkhand in the north and Rajmahal hills in the east to Katchch in the west. They surround the black soils on their south, east and north.

it is found in eastern parts of peninsular region covering Chhota Nagpur Plateau, odisha, Eastern Chattisgarh etc.