Chemistry - GOC Question with Solution | TestHub

The formulae differ : (a) is ${\mathrm{C}}_3{\mathrm{H}}_6$, (b) is ${\mathrm{C}}_6{\mathrm{H}}_{10}$ and (c) is ${\mathrm{C}}_5{\mathrm{H}}_8$. The molar heat of combustion rises with the number of carbons, so b $>$ c $>$ a.