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Chemistry · 2025 · 2 marks
Aldehydes, Ketones and Carboxylic AcidsChemical Reactions of Aldehydes, Ketones and Carboxylic Acids2 marksUnderstandvery short answer
CBSE 2025 · Region 1 · Set 1 · Q19
Would you expect benzaldehyde to be more reactive or less reactive in nucleophilic addition reactions than propanal? Justify your answer.
Would you expect benzaldehyde to be more reactive or less reactive in nucleophilic addition reactions than propanal ? Justify your answer.
Marking-scheme solution
•
Less reactive,
•
The carbon atom of the carbonyl group of benzaldehyde is less electrophilic than carbon
atom of the carbonyl group present in propanal. / The polarity of the carbonyl group is
reduced in benzaldehyde due to resonance.
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CBSE Class 12 Chemistry past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.