What do you mean by black coal?
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Answer:
kind of coal of a deep black colour; specifically bituminous coal or anthracite, as opposed to brown coal.
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Explanation:
Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen or asphalt. It is of higher quality than lignite and Sub-bituminous coal, but of poorer quality than anthracite. Formation is usually the result of high pressure being exerted on lignite.
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