Question

The `E^(o+)` will attack which ring in the following compounds and wht is the rate of ESR in this
A. In A, ring X will take part in electrophilic substitution reaction
B. In A, ring Y will take part in electrophilic substitution reaction
C. In B, ring Q will take part in electrophilic substitution reaction
D. Compound B is more reactive than compound A

Answer 1

Correct Answer - B::C::D
In compound A, ring Y is both activated and deactivated while ring X is only deactivated , hence Y is more electron rich than X and ESR takes place on Y ring. In compound B, ring Q is both activated and deactivated while ring P is only deactivated
In B ring, Q is attached to N
In A ring , Y is attached to O.

Hence, compound (B) is more reactive than compound A. Hence, (b), (c ) and (d) correct while (a) is incorrect.