The reagent used for the conversion of allyl alcohol to propenal is
- $\mathrm{O}_3 / \mathrm{H}_2 \mathrm{O}-\mathrm{Zn}$ dust
- DIBAL - H
- $\mathrm{CrO}_2 \mathrm{Cl}_2 / \mathrm{H}_3 \mathrm{O}^{+}$
- $\mathrm{C}_5 \mathrm{H}_5 \mathrm{NH}^{+} \mathrm{CrO}_3 \mathrm{Cl}^{-}$
Asked in: AP EAMCET 2018 (23 Apr Shift 1)