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

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry8.1. Organic chemistry Nomenclature of organic compounds1 Mark
MCQ
Choose the correct $IUPAC$ name of the compound $C{H_3} - \mathop {\mathop {CH - }\limits^{|\,\,\,\,} }\limits^{C{H_3}} \mathop {\mathop {CH - }\limits^{|\,\,\,\,} }\limits^{C{H_3}} C \equiv C - C{H_3}$
  • A
    $2, 3-$ dimethyl- $4-$ hexyne
  • ✓
    $4,5-$ dimethyl- $2-$ hexyne
  • C
    $5-$ propyl- $2-$ pentyne
  • D
    $2-$ propyl- $3-$ pentyne
✓

Answer

Correct option: B.
$4,5-$ dimethyl- $2-$ hexyne
b
(b) $\mathop {C{H_3}}\limits_{6\,\,\,\,\,\,\,} - \mathop {\mathop {\mathop {CH\,\,}\limits_{5\,\,\,\,\,\,\,\,} }\limits^{|\,\,\,\,\,\,\,\,\,} }\limits^{C{H_3}} - \mathop {\mathop {\mathop {CH\,\,}\limits_{4\,\,\,\,\,\,\,} }\limits^{|\,\,\,\,\,\,\,\,} }\limits^{C{H_3}} - \mathop C\limits_3 \equiv \mathop C\limits_2 - \mathop {C{H_3}}\limits_{1\,\,\,\,\,\,\,} $

$4, 5-$ di methyl -$2-$ hexyne

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