Question

Alkyl halide can be converted into alkene by:

• A. Nucleophilic substitution reaction
• B. Elimination reaction
• C. Both nucleophilic substitution and elimination reaction
• D. Addition reaction

Answer 1

The correct option is B Elimination reaction

$R-{\mathrm{CH}}_2-{\mathrm{CH}}_2-X+{\mathrm{KOH}}_{\left(\mathrm{alc}\right)}\stackrel{△}{\to }\mathrm{RCH}={\mathrm{CH}}_2+KX+H_{2}O$
The $H_{2}O$ and $KX$ molecules are eliminated during reaction, so we can say alkene is formed from alkyl halide by elimination reaction.