MEDIUM
8th CBSE
IMPORTANT
Earn 100

Coke is an almost pure form of carbon.

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Important Questions on Coal and Petroleum

MEDIUM
8th CBSE
IMPORTANT
Coal tar is a mixture of various substances. 
EASY
8th CBSE
IMPORTANT
Fossil fuels can be made in the laboratory in an economical manner.
MEDIUM
8th CBSE
IMPORTANT
The slow process of conversion of dead vegetation into coal is called _____.
MEDIUM
8th CBSE
IMPORTANT
The process of separation of different constituents from petroleum is called _____.(filtration/refining/concentration)
EASY
8th CBSE
IMPORTANT
The least polluting fuel for vehicles is _____.