Question

What do you mean by black coal? ​

Answer 1

Answer:

kind of coal of a deep black colour; specifically bituminous coal or anthracite, as opposed to brown coal.

Answer 2

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.