Question

The compound with molecular formula C8H10 which will give only two isomers on electrophilic substitution with Cl2/FeCl3 or with HNO3/H2SO4 is
(a) p-dimethylbenzene
(b) m-dimethylbenzene
(c) o-dimethylbenzene
(d) ethylbenzene​

Answer 1

The Option A is correct i.e. p- dimethylbenzene

Explanation:

• p- dimethylbenzene is also known as p-xylene; is one of the isomer of benzene which have molecular formular C8H10.

• p- dimethylbenzene on electrophilic substation gives only two isomers with chlorine and ferric chloride.

• p-dimethylbenzene is an aromatic hydrocarbon with boiling point of 138.4 degree centigrade.

Hope it helped.........!