Question

the material has the highest calorific value but is not considered as good fuel

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Answer 1

Answer:

HYDROGEN IS YOUR ANSWER

Calorific value is nothing but the energy contained in a fuel or food, determined by measuring the heat produced by the complete combustion of a specified quantity of it. This is now usually expressed in joules per kilogram. Hence, hydrogen has the highest calorific value.

Answer 2

Explanation:

the highest calorific fuel is hydrogen gas