1.

Heat of combustion DeltaH ofCH_(4), C_(2)H_(6), C_(2)H_(4) and C_(2)H_(2)gases are - 212.8, - 373.0, - 337.0and - 310.5 kcal respectively at the same temperature. The best fuel among these gases is

Answer»

`CH_(4)`
`C_(2)H_(6)`
`C_(2)H_(4)`
`C_(2)H_(2)`

Solution :`CH_(4)` is the BEST fuel because its CALORIFIC value`=(-212.8)/(16)=-13.3 kcal//g` is higher among the other GASES.


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