Which of the aldehyde is most reactive ?

Chemistry Carboxylic Acids and Their Derivatives Mix Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

C 6 H 5 –CHO

CH 3 CHO

HCHO

All the equally reactive

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The correct answer is:

Among Carbonyl Compounds, reactivity decrease with increase in alkyl groups as alkyl groups (+ I effect) decrease positive character on C -atom. Thus, the correct order of reactivity is

HCHO > CH 3 CHO > C 6 H 5 CHO

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