Chemistry - GOC Question with Solution | TestHub

The heat of combustion rises with the number of carbons : 3-ethylpentane (${\mathrm{C}}_7$) $>$ 2,3-dimethylbutane (${\mathrm{C}}_6$) $>$ neopentane (${\mathrm{C}}_5$). So b $>$ a $>$ c.