In homework, Ravi’s teacher gave him an assignment for writing one word for the following substance.
I) A mixture of about 200 substances.

II) A porous, black, almost pure form of carbon.

III) A fossil fuel used in thermal power plants for generating electricity

Could you help Ravi in identifying I, II and III ?

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I – Coal tar II – Coke, III - Coal

I – Coke, II - Coal gas, III - Petroleum

I – Coke, II - Coal tar, III - Coal

I - Coal tar, II – Coal, III - Coal gas

answer is B.

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Detailed Solution

Coal tar is a mixture of 200 substance and purest form of carbon is coke.

Coal is used in generation of electricity.

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