Select the incorrect reaction among the following:
1
\(\rm {CH}_3 {COCl} \xrightarrow[\Delta]{{H}_2 {O}} {CH}_3 {COOH}\)
2
3
\(\rm {CH}_3 {CH}_2 {OH} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{\oplus}]{\text { (i) } {KMnO}_4 / {OH}^{-}} {CH}_3 {COOH}\)
4
\(\rm {CH}_3 {CH}_2 {CH}_2 {OH} \xrightarrow{\mathrm{CrO}_3-{H}_2 {SO}_4} {CH}_3 {CH}_2 {COOH}\)