The simple word equation for the stoichiometric combustion of a hydrocarbon in air is:
Fuel + Oxygen + Nitrogen = Water + Nitrogen + Carbon dioxide
Thus Hydrogen does not form in complete combustion of hydrocarbon it forms only if there is incomplete combustion of hydrocarbon in air, Thus statement is false.
If the stoichiometric combustion takes place using air as the oxygen source, the nitrogen present in the air can be added to the equation (although it does not react) to show the composition of the resultant flue gas:
in following equation : z = x + 1/4y .