Q. The following reactions is an example of …. Reaction. $C_{2}H_{4}Br_{2}\overset{\ \ \ \ \ \ Alc.KOH\ \ \ \ }{\rightarrow}C_{2}H_{2}$
A) Addition
B) Dehydrobromination
C) Substitution
D) Debromination
Explanation
(b)
$\ \ \ CH_{2}Br\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ CH$
$\ \ \ \ |\ \ \ \ \ + \ \ \ 2KOH\overset{\ \ \ \ \ \ \ \ \mathrm{\Delta}\ \ \ \ \ \ \ }{\rightarrow}\ \ |||\ + 2KBr + 2H_{2}O$
$\ \ CH_{2}Br\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ CH$
ethylene dibromide acetylene
This is a dehydrohalogenation reaction.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.