Question

4. Least polluting fuel than petrol is...….....​

Answer 1

Explanation:

CNG is more polluting fuel than petrol. Coke is almost pure form of carbon. Coal tar is a mixture of various substances.

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NCERT Solution

They are more efficient.

They can be easily transported; either in cylinders or through pipelines.

They are less polluting than other fossil fuels.

Answer 2

CNG OR Natural gas is least polluting than petrol