MCQ
Pick out the alkane which differs from the other members of the group.
  • A
    $2,2-$dimethyl propane
  • B
    Pentane
  • C
    $2-$methyl butane
  • $2,2-$dimethyl butane

Answer

Correct option: D.
$2,2-$dimethyl butane
d
(d) Except $2,2$ dimethyl butane rest compound contain $5$ carbon i.e., pantane while $2,2 $ dimethyl butane contain $6$ carbon i.e., Hexane

$\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ 
  {C{H_3} - C{H_2} - C - C{H_3}} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}$

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