Question

How many among the following compound will give both the above result ?


i. Cyclohexanone ii. Acetone
iii. Propionaldehyde iv. Acetophenone
v. Acetaldehyde vi. Benzophenone
vii. Benzaldehyde

• A. $2$
• B. $5$
• C. $4$
• D. $3$

Answer 1

The correct option is A $2$

Positive 2, 4-DNP test $\Rightarrow$ carbonyl group.
Positive Fehling test $\Rightarrow$ Aliphatic aldehyde group. Aromatic aldehydes and ketones do not a give Fehling’s test. Hence, among the given options compounds (iii) and (v) will give positive 2, 4- DNP and Fehling’s test.