Question

the most pure form of carbon fuel is
a. coal
b. coke
c. charcoal
d. coal gas​

Answer 1

Answer:

Coke is the purest form of carbon with 90 % carbon. Coke is the answer as it contains 98 % carbon and is a smokeless fuel.

I hope it is helpful and sufficient for you

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Answer 2

The answer is option b. Coke