A) 8
B) 10
C) 11
D) 13
Correct Answer: D
Solution :
The number of isomeric alkenes with molecular formula \[{{C}_{6}}{{H}_{12}}\] are 13. (1)\[C{{H}_{2}}=CH-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] (2\[\underset{(cis\,\,and\,\,trans)}{\mathop{C{{H}_{3}}-CH=}}\,CH-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\]) (3)\[\underset{(cis\,\,and\,\,trans)}{\mathop{C{{H}_{3}}-C{{H}_{2}}-}}\,CH=CH-C{{H}_{2}}-C{{H}_{3}}\] (4)\[C{{H}_{2}}=CH-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}-C{{H}_{3}}\] (5)\[C{{H}_{2}}=\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] (6)\[C{{H}_{2}}=CH-C{{H}_{2}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{3}}\] (7)\[C{{H}_{3}}-CH=CH-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{3}}\] (8)\[C{{H}_{3}}-\overset{\begin{smallmatrix} (cis\,\,and\,\,trans) \\ C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,=CH-C{{H}_{2}}-C{{H}_{3}}\] (9)\[\underset{(cis\,\,and\,\,trans)}{\mathop{C{{H}_{3}}-CH=}}\,\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{2}}-C{{H}_{3}}\]
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