Q. Which of the aldehyde is most reactive?
A) $C_{6}H_{5} - CHO$
B) $CH_{3}CHO$
C) HCHO
D) All the equally reactive
Explanation
(c)
Among carbonyl compounds, reactivity decrease with increase in alkyl groups as alkyl groups $( + I\ effects)$ decrease positive character on C-atom. Thus, the correct order of reactivity is
$HCHO > CH_{3}CHO > C_{6}H_{5}CHO$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.