Q. Consider the reaction: RCHO + NH₂NH₂ → RCH=N–NH₂. What sort of reaction is it?
A) Electrophilic addition - elimination reaction
B) Free radical addition - elimination reaction
C) Electrophilic substitution - elimination reaction
D) Nucleophilic addition - elimination reaction
Explanation
[Solution from source] The nucleophilic nitrogen of hydrazine adds to the electrophilic carbonyl carbon, and the intermediate then loses water to form the hydrazone C=N bond. This is nucleophilic addition followed by elimination, not an electrophilic or free-radical process. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.