Q.61) Which of the following does not decolorize bromine water?
A)
B)
C)
D)
Q.61) Bromine water is decolorized by compounds with double bonds (like alkenes or activated benzene rings).
Aniline undergoes electrophilic substitution, not addition, and still decolorizes bromine water due to activation by $-\mathrm{NH}_2$ group.
But among the given options, only cyclohexane will not decolorize the bromine water since it does not have double bonds .
Hence, the correct answer is option (2).