Q. A strong base can abstract an α-hydrogen from
A) Alkane
B) Alkene
C) Amine
D) Ketone
Explanation
[Solution from source] The α-hydrogen of a ketone is acidic (pKa about 19–20), because the carbanion formed is stabilised as a resonance enolate by the C=O group. Alkanes, alkenes and amines have no such electron-withdrawing group to stabilise the carbanion. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.