A) Can be liquefied
B) Is limited in nature
C) Has very high calorific value
D) Has very high ignition temperature
Correct Answer: C
Solution :
Hydrogen has the highest calorific value among all the substances found on earth (150 kJ/g). Moreover, it has low ignition temperature. Therefore, when it is ignited, it reacts explosively with oxygen. Thus, it is very unsafe to use and is not considered as a good fuel. The correct answer is C.
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