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Question

Which form of coal has the highest carbon content in it?

A
Lignite
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B
Sub-bituminous
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C
Bituminous
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D
Anthracite
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Solution

The correct option is D Anthracite
The order of carbon content is as follows:
Lignite < sub-bituminous < bituminous < anthracite
Hence, anthracite has highest carbon content. It is a hard, compact variety of coal that has a good lustre.

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