A) C6H5CH2CHO
B) C6H5CHO
C) CH3CH2CH2CHO
D) \[\begin{align} & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O \\ & C{{H}_{3}}-\overset{||}{\mathop{C}}\,-C{{H}_{3}} \\ \end{align}\]
Correct Answer: B
Solution :
| [b] Aldehydes which do not have any \[\alpha \]-hydrogen atom when heated with a cone, solution of NaOH undergo a simultaneous oxidation and reduction (disproportionation) forming a salt of carboxylic acid and alcohol called Cannizaro reaction) |
| 2C6H5CHO + NaOH \[\xrightarrow[{}]{{}}\] \[\underset{benzyl\,alcohol}{\mathop{{{C}_{6}}{{H}_{5}}C{{H}_{2}}OH}}\,+\underset{sodium\,benzoate}{\mathop{{{C}_{6}}{{H}_{5}}COONa}}\,\] |
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