Which of the following grades of coal has the highest carbon content?
A. Anthracite
B. Bituminous coal
C. Lignite
D. Peat
Answer: Option A
Solution(By Examveda Team)
Anthracite is the highest rank of coal. Unlike other types of coal, it is usually considered to be a metamorphic rock. It has a carbon content of over 87% on a dry ash-free basis. Anthracite coal generally has the highest heating value per ton on a mineral-matter-free basis. It is often subdivided into semi-anthracite, anthracite, and meta-anthracite on the basis of carbon content. Anthracite is often referred to as "hard coal"; however, this is a layman's term and has little to do with the hardness of the rock.Related Questions on Miscellaneous World Geography
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