Which one among the following

Question:

 Which one among the following is considered as the cleanest fuel?

(a) Cowdung cake

(b) Petrol

(c) Kerosene

(d) Hydrogen gas

Solution:

(d) Hydrogen gas is considered as cleanest fuel. Unlike carbon based fuels, hydrogen produces no harmful by-products on combustion. Only energy

and clean water are produced.

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