The heats of combustion of ethane, ethen...

The heats of combustion of ethane, ethene and acetylene are `-341.1` kcal, `-330` kcal and `-310.9` kCal `mol^(-1)` respectively. The best fuel among them is

Ethane

Ethene

Acetylene

All are equal

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The correct Answer is:

Fuel efficiency `= (Delta H)/(M. wt)`

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The correct is
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