5 ml of unsaturated hydrocarbon requires 15 ml of Oxygen for complete combustion to produce 10 ml of carbondioxide. Formula of Hydrocarbon is
CxHy + x+y4O2 →xCO2 + y2 H2O
5ml 5 x+y4 5X 5y2
Given 5x = 10
x = 2
5 x+y4=15
x+y4=3
y4=1
Y = 4
Formulae =C2H4