MCQ
Which of the following compound is wrongly named ?
  • A
    $\begin{array}{*{20}{c}}
    {C{H_3}C{H_2}C{H_2}CHCOOH}\\
    {\,\,\,\,\,\,\,\,\,\,|}\\
    {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Cl\,\,\,}
    \end{array}$; $2-$ Chloropentanoic acid
  • $\begin{array}{*{20}{c}}
      {C{H_3}C \equiv CCHCOOH} \\ 
      {\,\,\,\,{\mkern 1mu} {\mkern 1mu} \,\,{\mkern 1mu} |\,\,{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} } \\ 
      {{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,C{H_3}{\mkern 1mu} {\mkern 1mu} } 
    \end{array}$ $2-$ Methyl hex $-3-$ enoic acid
  • C
    $CH_3CH_2CH=CHCOCH_3$; Hex $-3-$ en $-2-$ one
  • D
    $\begin{array}{*{20}{c}}
      {C{H_3} - CHC{H_2}C{H_2}CHO} \\ 
      {|{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,\,\,\,\,\,\,\,{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} } \\ 
      {C{H_3}{\mkern 1mu} \,\,\,\,\,\,\,\,\,\,\,\,{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} } 
    \end{array}$; $4-$ Methyl pentanal

Answer

Correct option: B.
$\begin{array}{*{20}{c}}
  {C{H_3}C \equiv CCHCOOH} \\ 
  {\,\,\,\,{\mkern 1mu} {\mkern 1mu} \,\,{\mkern 1mu} |\,\,{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} } \\ 
  {{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,C{H_3}{\mkern 1mu} {\mkern 1mu} } 
\end{array}$ $2-$ Methyl hex $-3-$ enoic acid
b

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