Which of the following gives positive 2, 4 – DNP test and a yellow ppt with NaOH + I2 but does not give  precipitate with [Ag(NH3)2]+

It gives positive 2, 4 – DNP test, because it is a carbonyl compound.It is a methyl Ketone. It gives yellow ppt of CHI3 with NaOH + I2.Ketones cannot reduce Tollen’s reagent.option 1……negative Iodoform test;option 2…..gives Tollen's test;option 4…. negative Iodoform test;