MCQ
In the structure $\begin{array}{*{20}{c}}
  {C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {^1{H_3}C{ - ^2}C{ - ^3}C{H_2}{ - ^4}C{H_3}} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}} 
\end{array}$ Which one is quarternary carbon atom.......
  • A
    $ 1$
  • $2$
  • C
    $ 3$
  • D
    $5$

Answer

Correct option: B.
$2$
(b) $\begin{array}{*{20}{c}}
  {^5C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {^1{H_3}C{ - ^2}C{ - ^3}C{H_2}{ - ^4}C{H_3}} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {^6C{H_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}} 
\end{array}$

$C - 2$ is quaternary carbon because it is attached to 4 other carbon atoms.

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