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Question

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

A
1
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B
2
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C
3
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D
4
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Solution

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)

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