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Question

Identify the substance which is tough, porous and black. It is almost a pure form of carbon.

A
Coke
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B
Crude oil
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C
Coal gas
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D
Coal tar
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Solution

The correct option is A Coke
Coke is a tough, porous and black substance. It is almost a pure form of carbon. It is used in the manufacture of steel and also in the extraction of many metals.

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