Give reasons in two or three sentences only for the following: Phenul group is known to exert negative inductive effect, but each phenyl ring in biphenyl `(C_(6)H_(5)-C_(6)H_(5))` is more reactive than benzene towards electrophilic substitution.

Explanation

In biphenyl, one phenyl group acts as an electron donor, while the other acts as an electron acceptor Thus, due to this reason, the phenyl ring is more reactive than benzone towards electrophillic substituion.