Which of the statements about coal is NOT correct ........

Geography Energy

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Which of the statements about coal is NOT correct?

Coal is type of sedimentary rock

The grades of coal depends upon degree of overlying pressure

Coal deposits will have vertical profile instead of horizontal

Peat and lignite are the first stages of coal formation

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Explanation:

Coal is an organic sedimentary rock that forms from the accumulation and preservation of plant materials, usually in a swamp environment.

There are four stages in coal formation: peat, lignite, bituminous and anthracite. The stage depends upon the conditions to which the plant remains are subjected after they were buried – the greater the pressure and heat, the higher the rank of coal.