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Which fuel causes minimum environmental pollution? UPSC Prelims PYQ 1995

Which one of the following fuels causes minimum environmental pollution?

Diesel
Coal
Hydrogen
Kerosene

Explanation

Option (c) is correct

Hydrogen, when used as fuel, produces water as the main by-product, making it the cleanest among the options

Answer: (c) Hydrogen

1995, UPSC Prelims PYQs

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