Question

How many postional isomers are possible of a disubstituted benzene compound.

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is C 3

Structural isomers with a difference in the position of multiple bond/functional group/alkyl substituent on the same carbon skeleton (parent chain) is called positional isomers.
In disubtituted benzene, there are 3 positional isomers depending on the position of the two substituted groups in benzene. These are ortho position (1, 2 or 1,6), meta position (1, 3 or 1,5) and para position (1,4)