A) Bituminous, Anthracite, Lignite, Peat
B) Anthracite, Bituminous, Lignite, Peat
C) Anthracite; Lignite, Peat, Bituminous
D) Anthracite, Peat, Bituminous, Lignite
Correct Answer: B
Solution :[b] Quality of coal is determined by its carbon content. Accordingly, following is the sequence of four types of coal in descending order of quality.
|Coal||Percentage of carbon content|
|Anthracite||80 - 95|
|Bituminous||60 - 80|
|Lignite||40 - 60|
|Peat||40 - 55|
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