question_answer

Benzaldehyde and acetaldehyde can be differentiated by

A)                 HCN      

B)                 \[N{{H}_{2}}OH\]

C)                 Hydrazine           

D)                 NaOH solution

Correct Answer: D

Solution :

           Benzaldehyde gives cannizaro?s reaction whereas acetaldehyde gives aldol condensation. \[2C{{H}_{3}}CHO\underset{{}}{\mathop{\xrightarrow{\text{dil}\,NaOH}}}\,\underset{(\text{Aldol})\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-\underset{OH}{\mathop{\underset{|\,\,\,\,\,}{\mathop{CH}}\,}}\,-C{{H}_{2}}-CHO}}\,\]