Number of molecules from below which cannot give iodoform reaction is: Ethanol, Isopropyl alcohol, Bromoacetone, 2-Butanol, 2-Butanone, Butanal,…

Number of molecules from below which cannot give iodoform reaction is: Ethanol, Isopropyl alcohol, Bromoacetone, $\displaystyle 2$-Butanol, $\displaystyle 2$-Butanone, Butanal, $\displaystyle 2$-Pentanone, $\displaystyle 3$-Pentanone, Pentanal and $\displaystyle 3$-Pentanol.