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Which does not reacts with Fehling solution? A. CH3-CHO B. H-COOH C. C6H12O6 D. C6H5CHO

Which does not reacts with Fehling solution? 
A. CH3-CHO
B. H-COOH
C. C6H12O6
D. C6H5CHO

Grade:12th pass

3 Answers

Arun
25750 Points
4 years ago
Aldehydes that lack alpha hydrogens, such as benzaldehyde or pivalaldehyde (2,2-dimethylpropanal) cannot form an enolate and thus do not give a positive Fehling's test result under usual conditions
hence option D is correct 
Abdul
13 Points
4 years ago
Aldehydes without alpha hydrogen does not react with fehling soln. Hence acetaldehyde in the given list is correct
RISHIKA
550 Points
3 years ago

Aromatic aldehyde ie, C6​H5​CHO are not able to reduce Fehling's solution but it gives Cannizaro's reaction with alkali.

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