Answer:
Step-by-step explanation:
a) m-Xylene
It is an aromatic hydrocarbon having molecular formula, C8H10. in this compound, two methyl groups are present at 1 and 3 positions of benzene ring.
b) o-Cresol
It is an organic compound having molecular formula, C7H8O. It is a substituted phenol in which a methyl group is present at ortho position.
c) 3-Bromo-4-nitrobenzenesulfonic acid
In this aromatic compound, three functional groups: -SO3H, -NO2 and -Br are present on the benzene ring at 1, 4 and 3 postion respectively.