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Question

Which among the following are the different varieties of coal?

A
Bauxite
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B
Lignite
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C
Bituminous
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D
Anthracite
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Solution

The correct options are
B Lignite
C Bituminous
D Anthracite
Coal is formed after the formation of peat and it has been classified in three categories. Lignite, bituminous and Anthracite. Lignite is a low grade brown coal having about 60 to 70% carbon and Anthracite is the highest quality coal having carbon content more than 86%.

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