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(C) The conversion of toluene to benzaldehyde can be achieved by the following methods:
$1$. Side chain chlorination followed by hydrolysis $(A)$: To

Vedclass · Accepted Answer

$A, D$

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(C) The conversion of toluene to benzaldehyde can be achieved by the following methods:
$1$. Side chain chlorination followed by hydrolysis $(A)$: Toluene reacts with $Cl_2$ in the presence of light $(h
u)$ to form benzal chloride $(C_6H_5CHCl_2)$,which upon hydrolysis with $H_2O$ at high temperature $(\Delta)$ yields benzaldehyde.
$2$. Etard reaction $(D)$: Toluene reacts with chromyl chloride $(CrO_2Cl_2)$ in $CS_2$ solvent followed by acidic hydrolysis $(H_3O^{+})$ to give benzaldehyde.
$3$. Reagent $C$ $(KMnO_4 / OH^{-} ; H^{+})$ is an oxidizing agent that converts toluene directly to benzoic acid,not benzaldehyde.
Therefore,the correct sets are $A$ and $D$.

Which of the following sets of reagents convert toluene to benzaldehyde?
$A$. $Cl_2 / h\nu ; H_2O, \Delta$
$B$. $Cl_2 / Fe ; H_2O$
$C$. $KMnO_4 / OH^{-} ; H^{+}$
$D$. $CrO_2Cl_2 / CS_2 ; H_3O^{+}$

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Which of the following sets of reagents convert toluene to benzaldehyde? $A$. $Cl_2 / h\nu ; H_2O, \Delta$ $B$. $Cl_2 / Fe ; H_2O$ $C$. $KMnO_4 / OH^{-} ; H^{+}$ $D$. $CrO_2Cl_2 / CS_2 ; H_3O^{+}$