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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
The correct statement $(s)$ about the compound given below is $(are)$ $Image$

$(A)$ The compound is optically active

$(B)$ The compound possesses centre of symmetry

$(C)$ The compound possesses plane of symmetry

$(D)$ The compound possesses axis of symmetry

  • A
    $(B,C)$
  • B
    $(A,C)$
  • C
    $(A,B)$
  • ✓
    $(A,D)$
✓

Answer

Correct option: D.
$(A,D)$
d
$Image$ The molecule possesses an axis of symmetry $\left(C_2\right)$ perpendicular to the $\mathrm{C}-\mathrm{C}$ bond.

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$(i)$ $\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ 
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$(ii)$ $H _{2} C = CH - CH _{2}$

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$\begin{array}{*{20}{c}}
  {C{H_3} - CH = CH - CH - CH - C{H_3}} \\ 
  {{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\mkern 1mu} {\mkern 1mu} |{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,\,\,\,\,{\mkern 1mu} {\mkern 1mu} |{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} } \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,{\mkern 1mu} {\mkern 1mu} \,\,\,{\mkern 1mu} {\mkern 1mu} OH\,\,} 
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