Aldehydes Ketones Question 159
Question: Which gives difference between aldehyde and ketone
[CPMT 1994]
Options:
A) Fehling’s solution
B) Tollen’s reagent
C) Schiff’s reagent
D) Benedict’s solution
E) All of these
Show Answer
Answer:
Correct Answer: E
Solution:
Fehling solution Þ Alkaline $ CuSO_4+Na-K $ tartarate Tollen’s reagent Þ $ NH_4OH+AgNO_3 $ Schiff’s reagent Þ P-rosaniline hydrochloride or magneta Benedict’s solution Þ Alkaline $ CuSO_4+ $ Citrate ions All these reagents are used to distinguish between aldehydes and ketones. Aldehydes reacts with all these reagents while ketones do not react.
BETA
