Question

why hydrogen gas is not used as a fuel

Answer 1

hydrogen gas is not used as a fuel because it does not have a high calorific value .. calorific value means the energy produced by burning something combustible substance

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Answer 2

Hydrogen is not used as a domestic fuel, even after having the highest calorific value, because-

a. It is neither cheap nor easily available/abundant.

b. It is not easy to store.

c. It is highly explosive.

d. It does not burn at a slow rate (undergoing controlled combustion).

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