0.2 moles of unsaturated hydrocarbon on combustion produced 26.4 grams of carbon dioxide. The hydrocarbon is

0.2 moles of H.C-----26.4 grams of CO2 ;1 mole of H.C-----132 grams of CO2 ;1 mole of H.C-------3 moles of CO2 ;Since the H.C is unsaturated, it is a three membered alkene or alkyne(Propene (or) propyne) ;