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B
2-methylbutan-2-ol
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C
2-methylpentan-2-ol
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D
1,1 dimethyl propan-1-ol
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Solution
The correct option is B 2-methylbutan-2-ol The IUPAC name of the given compound is 2-Methylbutan-2-ol. The parent hydrocarbon contains 4 carbon atoms and is named butane. A methyl substituent is present at second C atom. A hydroxyl group is present at second C atom. Hence, the last alphabet e of butane is replaced with the suffix -2-ol.