MHT CET 202625 AprilEvening Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 25 April
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- Aldehydes and Ketones
MHT CET 2026 · 25 April · Evening Shift · Chemistry · Aldehydes and Ketones
Aromatic aldehydes are less reactive than the aliphatic aldehydes...
Aromatic aldehydes are less reactive than the aliphatic aldehydes in nucleophilic addition reaction this is due to
Options
- Aelectron donating resonance effect of aromatic ring
- Belectron withdrawing resonance effect of aromatic ring
- Ccarbonyl carbon is less nucleophilic
- DPresence of two alkyl group.
Correct answer
A. electron donating resonance effect of aromatic ring
Step-by-step solution
Aromatic aldehydes are less reactive than aliphatic aldehydes in nucleophilic addition reactions due to the electron-donating resonance effect (+R effect) of the aromatic ring.
The electrons of the benzene ring are delocalized into the carbonyl group through resonance. This delocalization reduces the magnitude of the partial positive charge on the carbonyl carbon.
As a result, the carbonyl carbon becomes less electrophilic, making it less susceptible to attack by a nucleophile compared to the carbonyl carbon in aliphatic aldehydes.
Answer: electron donating resonance effect of aromatic ring
The electrons of the benzene ring are delocalized into the carbonyl group through resonance. This delocalization reduces the magnitude of the partial positive charge on the carbonyl carbon.
As a result, the carbonyl carbon becomes less electrophilic, making it less susceptible to attack by a nucleophile compared to the carbonyl carbon in aliphatic aldehydes.
Answer: electron donating resonance effect of aromatic ring