See image — Haloalkanes and Haloarenes Chemistry Question

💡 Solution & Explanation

Correct option: \(\text{B}\). Elimination removes \(\ce{HX}\) from adjacent carbons. The major alkene usually follows Zaitsev's rule unless steric or mechanistic factors favour the less substituted product. Recovered question text: 21. The given reaction is an example of C H Br + KCN(aq.) ⎯⎯→ C H CN + KBr 2 5 2 5 (1) Elimination reaction (2) Nucleophilic substitution (3) Electrophilic substitution (4) Redox change