Q. Which of the following reactions is an example of nucleophilic substitution reaction?
A) 2RX + 2Na → R–R + 2NaX
B) RX + H₂ → RH + HX
C) RX + Mg → RMgX
D) RX + KOH → ROH + KX
Explanation
[Solution from source] In RX + KOH(aq) → ROH + KX the nucleophile OH⁻ replaces the halide ion, a nucleophilic substitution. Reaction with Na is the Wurtz coupling, with H₂ is a reduction, and with Mg forms a Grignard reagent. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.