question_answer

Benzaldehyde can be prepared by oxidation of toluene by [BHU 1986]

A)                 Acidic \[KMn{{O}_{4}}\]               

B)                 \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]

C)                 \[Cr{{O}_{2}}C{{l}_{2}}\]              

D)                 All of these

Correct Answer: C

Solution :

                                This is Etard?s reaction