Name the region in which India's main coalfields are located. What is the quality of coal found here? What are its uses?

The Gondwana coalfields are the largest in India as it accounts for 98% of the total reserves of coal in India. Gondwana coal fields are located in the states of West Bengal, Jharkhand, Odisha, Chhattisgarh, Maharashtra, Madhya Pradesh, Uttar Pradesh and Andhra Pradesh. These coal fields accounts for four-fifth of India's coal reserves.

Gondwana coal is mainly of bituminous quality. It is almost free from moisture and contains sulphur and phosphorus in small variable quantities.

Gondwana coal is used to produce coke, coal gas and steam coal.