Which of the following compounds would react rapidly with bromine?

A. Benzene
B. Hexane
C. Hexene
D. Hexanol

Correct Answer:

Option C – Hexene

Explanation

The addition of bromine to most alkenes is so fast that when bromine is added dropwise to a solution of the alkene the red bromine color disappears almost immediately. In fact, this discharge of color is a useful qualitative test for alkenes.