Social Sciences, asked by surianuma92, 1 year ago

Why is sub-bituminous coal is brown in color while bituminous coal is in black?? If you answer this question you will become a legend in chemistry. please answer

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Answered by Anonymous

Answer:

it is of higher quality than lignite coal but of poorer quality than anthracite. Formation is usually the result of high pressure being exerted on lignite. Its coloration can be black or sometimes dark brown; often there are well-defined bands of bright and dull material within the seams.

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