Question
The $\text{IUPAC}$ name of $\ce{CH_{3​}−C(CH_{3​})(OH)CH_2​−CH(CH_3​)_2}$​ is:

Answer

In the longest carbon chain, $−OH$ group is closest to the left$-$hand side, therefore we number from the left$-$hand side. There is $5$ carbon in the longest chain, in second and fourth positions methyl group is attached and in second position there is an alcoholic group. Thus $\text{IUPAC}$ name is $2,4-$Dimethyl pentan$-2-ol.$

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