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Lignite is also called as __________

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Lignite is also called as __________

(a) black coal

(b) brown coal

(c) char coal

(d) crude oil

I have been asked this question in a job interview.

I would like to ask this question from Solid Fuels topic in section Fuel Technologies of Applied Chemistry

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Correct option is (b) brown coal

Best explanation: Lignite is also called as brown coal. Char coal is used for domestic purposes and it is different from lignite.

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