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8.2 Organic chemistry isomerism — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry8.2 Organic chemistry isomerism1 Mark
MCQ
Which pair represents chain isomer
  • A
    $C{H_3}CHC{l_2}$ and $ClC{H_2}C{H_2}Cl$
  • B
    $n-$propyl alcohol and isopropyl alcohol
  • C
    $2-$methyl$-1$ propanol and $2-$Methyl$-2$ propanol
  • ✓
    $2-$methyl butane and neopentane
✓

Answer

Correct option: D.
$2-$methyl butane and neopentane
d
$\begin{matrix} C{{H}_{3}}-CH-C{{H}_{2}}-C{{H}_{3}}  \\ |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\ C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,  \\ \end{matrix}$

$2$-methyl butane

$\begin{matrix} C{{H}_{3}}  \\ |  \\ C{{H}_{3}}-C-C{{H}_{3}}  \\ |  \\ C{{H}_{3}}  \\ \end{matrix}$

neo pentane

Since, they have same molecular formula but they differ in branching. So they are chain isomer.

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