Three liquids X, Y and Z containing only hydrogen and carbon were burnt on a spoon. X and Y burnt with sooty flames while Z did not. Y is able to discharge ...

Answer Details

The liquids X and Y burning with sooty flames indicate that they contain carbon atoms, while Z not burning with sooty flames indicate that it does not contain carbon. Y being able to discharge the color of bromine water suggests that it contains a double bond, which means it is unsaturated. Therefore, only Y is unsaturated and contains a double bond, which makes it aromatic in nature. X and Z are both saturated and do not contain any double bonds, so they are not aromatic. Thus, the answer is Y.