Question

How coal is formed ? Describe two different ages of coal (Gondwana and tertiary). Where are they found in India ? What are different "categories of coal​

Answer 1

Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. ... Some iron and steel making and other industrial processes burn coal. The extraction and use of coal causes many premature deaths and much illness.

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Answer 2

Answer:

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Explanation:

In India, coal occurs in rock series of two main geological ages. The Gondwana coal was formed over 200 million years ago. The tertiary deposits are about 55 million years old. The major sources of Gondwana coal are located in the Damodar valley (West Bengal-Jharkhand). In this belt, Jharia, Raniganj and Bokaro are important coalfields. Coal deposits are also present in the Godavari, Mahanadi, Son and Wardha valleys. Tertiary coal is found in the north-eastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland.