Question

Which one of the following statements on the nitration of aromatic compounds is false?
A. The rate of nitration of benzene is almost the same as that of hexadeuteriobenzene.
B. The rate of nitration of toluene is greater than that of benzene.
C. The rate of nitration of benzene is greater than that of hexadeuteriobenzene.
D. Nitration is an electrophilic substitution reaction.

Answer 1

Correct Answer - C
In electrophilic aromatci substitution such as nitration there is no isotope effect because the reaction is almost irreversible and the `C-H` bond of benzene ring is not broken in the rate-controlling step.