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8.1. Organic chemistry Nomenclature of organic compounds — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry8.1. Organic chemistry Nomenclature of organic compounds1 Mark
MCQ
$IUPAC$ name of the compound is $C{H_3} - \mathop {\mathop {\mathop {\mathop {CH}\limits_{|\,\,\,\,\,} }\limits_{C{H_2}} }\limits_{|\,\,\,\,\,\,} }\limits_{C{H_3}} - C{H_2} - CH(OH) - C{H_3}$ is
  • A
    $4-$ ethyl $-2-$ pentanol
  • ✓
    $4-$ methyl $-2-$ hexanol
  • C
    $2-$ ethyl $-2-$ pentanol
  • D
    $3-$ methyl $ -2-$ hexanol
✓

Answer

Correct option: B.
$4-$ methyl $-2-$ hexanol
b
Longest carbon chain has $6$ atoms. We number from right hand side as alcohol group at $C -2$ gets least number in this case and suffix used for alcohol is "-$ol$". Methyl group is present at $C-4$ position.

Thus, IUPAC name is $4$-Methyl-$2$-hexanol.

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