Which of the following is halogen exchange reaction?
Correct Answer: (a). Halogen exchange reactions are those reactions in which one halide replaces another halide.
In option (a) halogen (-X) is replaced by another halogen, iodine. This reaction is named as Finkelstein reaction.
In option (b), there is the addition of hydrogen halide on alkene.
In option (c), halogen replaces the alcoholic group.
While in option (d) halogen replaces the hydrogen of the benzene ring.