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Which of the following compounds will have only primary and tertiary carbon? (i) Pentane (ii) 2- Methylbutane (iii) 2,3 -Dimethylbutane (iv) 2- Bromo-2-Methylpropane

$ (a)\;(i)\; and\;(ii) \\ (b) \; (ii)\;and \;(iii) \\ (c) \;(i)\;and \;(iv) \\ (d)\;(iii)\;and (iv) $

1 Answer

$CH_3 $ is primary $(1^{\circ})$ c-atom.
$ CH_2$ is secondary $(2^{\circ})$ c-atom
$ CH$ is tertiary $(3^{\circ})$ c-atom.
$C$ is quarterynary $(4^{\circ})$ c-atom.
Hence d is the correct answer.
answered Feb 28, 2014 by meena.p

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