Question

Which of the following does not give benzoic acid salt on oxidation with hot alkaline KMnO4.

• A. Ph–CH3
• B. Ph–CH=CH–CH3
• C. Ph–CºC–CH3
• D. Ph–C(CH3)3

Answer 1

Answer: (D)

Ph–C(CH3)3

Answer 2

Ph–CH3 $\xrightarrow { \text { Hot Alkaline } \mathrm { KMnO } _ { 4 } }$ Ph–COO– Ph–CH=CH–CH3 $\xrightarrow { \text { Hot Alkaline } \mathrm { KMnO } _ { 4 } }$ Ph–COO– Ph–CºC–CH3 $\xrightarrow { \text { Hot Alkaline } \mathrm { KMnO } _ { 4 } }$ Ph–COO–