Statement`:` Heat of combustion are always exothermic.
Explanation `:` Combustio of `N_(2)` to give `NO` is exothermic.
Explanation `:` Combustio of `N_(2)` to give `NO` is exothermic.
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Correct Answer – a
`(1)/(2) N_(2)+(1)/(2)O_(2) rarr NO,DeltaH=+ve.`
It is due to high bond energy of `N_(20`. Note this equation does not represent heat of combustion of `N_(2)(` Partial combustion `)`.