Bromination of phenol gives tribromophenol while bromination of nitrobenzene gives only one bromonitrobenzene, why ?

Bromination of phenol gives tribromophenol while bromination of nitrob

1.	Bromination of phenol gives tribromophenol while bromination of nitrobenzene gives only one bromonitrobenzene, why ?
Answer» SOLUTION :Because in phenol -OH GROUP is PRESENCE, which is ACTIVATOR while NITROBENZENE `-NO_(2)` group is deactivator.