Question

Butan$-2-$one can be converted to propanoic acid by which of the following?

• A. $LiAl{H}_4$
• B. $NaOH,I_2/H^{+}$
• C. Felhing solution
• D. Tolen's reagent

Answer 1

The correct option is B $NaOH,I_2/H^{+}$

Butan$-2-$one got reduced to butan$-2-$ol in presence of $LiAl{H}_4$.
Ketone doesn't reacts with felhing solution and tolen's reagent.
$NaOH.I_2/H^{+}$ is the reagent for iodoform test. Butan$-2-$one having '$C{H}_3-CO-$' group can respond to iodoform test. Butan$-2-$one reacts with $NaOH.I_2/H^{+}$ to give $CH{I}_3,HI$ and propanoic acid.