Aldehydes Ketones Question 157

Question: A mixture of benzaldehyde and formaldehyde on heating with aqueous $ NaOH $ solution gives

[IIT-JEE (Screening) 2001]

Options:

A) Benzyl alcohol and sodium formate

B) Sodium benzoate and methyl alcohol

C) Sodium benzoate and sodium formate

D) Benzyl alcohol and methyl alcohol

Show Answer

Answer:

Correct Answer: A

Solution:

Crossed aldol reaction gives benzyl alcohol and sodium formate. $ \underset{Benzaldehyde}{\mathop{C_6H_5CHO}}+\underset{Formaldehyde}{\mathop{HCHO}}\xrightarrow{NaOH(aq)} $

$ \underset{Benzylalcohol}{\mathop{C_6H_5CH_2OH}}+\underset{Sod\text{.}formate}{\mathop{HCOONa}} $