Question

Phenyl group show __________

(a) (+M) effect

(b) (+E) effect

(c) (+I) effect

(d) (-M) effect

I got this question by my school principal while I was bunking the class.

This interesting question is from Mesomeric Effect in portion Reactivity of Molecules Reaction Mechanism of Engineering Chemistry I

Answer 1

Correct choice is (d) (-M) effect

To explain I would say: Phenyl group show (-M) effect. The phenyl group or phenyl ring is a cyclic group of atoms with the formula C6H5.