A) Anthracite
B) Bituminous
C) Lignite
D) Peat
Correct Answer: A
Solution :
Quality of coal is determined by the amount of carbon contained in it. From this point of view, anthracite is the best quality of coal as it contains about 95% carbon. This is followed by bituminous (50-80%), lignite (about 40%) and peat (less than 40%).
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