CH3CHO C6H5COCH2.CH3 CH3COCH3 HCHO Ans. B) C6H5COCH2.CH3 does not react with NaHSO3. As discussed in the beginning, aromatic ketones do not react with Schiff reagent as they are less reactive than aliphatic ketones and both aromatic aldehydes and aliphatic aldehydes.