Consider the following about statements about lsquo Coal rsquo found in India 1 The coal blocks foun...........

Geography Minerals

Consider the following about statements about ‘Coal’ found in India.

1. The coal blocks found in northeastern India are much older than that found in Damodar valley (West Bengal-Jharkhand), Jharia, Raniganj, Bokaro.

2. The coal blocks found in Damodar valley (West Bengal-Jharkhand), Jharia, Raniganj, Bokaro are much superior in quality than the coal found in northeastern India.

Which of the above statement is/are correct?

1 only

2 only

Both

None

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Explanation:

In India coal occurs in rock series of two main geological ages, namely Gondwana, a little over 200 million years in age and in tertiary deposits which are only about 55 million years old. Gondwana (200 million years old) coal forms India’s metallurgical grade as well as superior quality coal.
The major resources of Gondwana coal, which are metallurgical coal, are located in Damodar valley (West Bengal-Jharkhand). Jharia, Raniganj, Bokaro are important coalfields. The Godavari, Mahanadi, Son and Wardha valleys also contain coal deposits.
Tertiary coal 55 million years old. Carbon content is very low. Coal generally has low carbon and high percentage of moisture and Sulphur. [It takes few hundred million years for the carbon content to improve].Tertiary coals occur in the north eastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland.