1.
An ester (X) with molecular formula C9H10O2\text{C}_9\text{H}_{10}\text{O}_2 was treated with excess CH3MgBr\text{CH}_3\text{MgBr} and the complex so formed was treated with H2SO4\text{H}_2\text{SO}_4 to give an alkene (Y) whose ozonolysis gave a ketone with molecular formula C8H8O\text{C}_8\text{H}_8\text{O} which shows a positive iodoform test. The structure of (X) is: