• # question_answer Which of the following alkanes contains primary, secondary, tertiary and quaternary carbon atoms together [MP PET 2001] A) ${{(C{{H}_{3}})}_{4}}C$ B) $HCHO$ C) $C{{H}_{3}}CHO$ D) ${{(C{{H}_{3}})}_{4}}C$

$C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,\,}{\overset{\overset{C{{H}_{3}}}{\mathop{|\,\,\,\,\,\,\,\,\,}}\,}{\mathop{{{C}^{{{4}^{o}}}}-}}}\,}}\,\,\overset{{{2}^{o}}\,\,\,\,}{\mathop{C{{H}_{2}}}}\,-\underset{C{{H}_{3}}}{\mathop{\overset{{{3}^{o}}\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,}{\mathop{CH}}\,}}\,}}\,-\overset{{{1}^{o}}\,\,\,\,\,}{\mathop{C{{H}_{3}}}}\,$