Aldehydes Ketones Question 122
Question: To distinguish between formaldehyde and acetaldehyde, we require
[Orissa PMT 1987]
Options:
A) Tollen’s reagent
B) Fehling’s solution
C) Schiff’s reagent
D) Caustic soda solution
Show Answer
Answer:
Correct Answer: D
Solution:
$ 2HCHO\underset{Conc.}{\mathop{\xrightarrow{NaOH}}}CH_3OH+HCOONa $ It is a Cannizzaro’s reaction. $ 2CH_3CHO\underset{dil}{\mathop{\xrightarrow{NaOH}}}CH_3-\overset{OH}{\mathop{\overset{|}{\mathop{CH}}}}-CH_2-CHO $ It is aldol condensation reaction.
BETA
