An organic liquid (A) containing C, H and O with boiling point ${78}^{0}C$ and possessing a rather pleasant odour, on heating with Conc. $H_{2}S{O}_4$gives a gaseous

Product (B) – with the empirical formula, $C{H}_2$. ‘B’ decolorizes Bromine water as well as alkaline $KMn{O}_4$ and takes up one mole of $H_2$ (Per mole of B) in the presence of finely divided Ni at high temperature.