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Question

IUPAC name of m−cresol is _________.

A
3chlorophenol
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B
3methylphenol
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C
benzene1,3diol
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D
3methoxyphenol
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Solution

The correct option is B 3methylphenol
IUPAC nomenclature of mcresol

Structure of mcresol is:


Alcohol is given higher priority over methyl group. So, it is named by considering that OH group is attached to C1.

So, IUPAC name of mcresol will be 3methylphenol

Analysing the options

Option (A)

3methylphenol represents the mcresol.



Option (B)

Structure of 3chlorophenol is shown below:


Obviously, it does not represent mcresol.

Option (C)

Structured of 3methoxyphenol is shown below:


It too does not represent mcresol.

Option (D)

Structure of benzene1,3diol is shown below:


It too does not represent mcresol, it is resorcinol. So, the correct answer is option (A).

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