• # question_answer The number of $\pi$ bonds in 3-hexyne-1-ene is [MP PMT 1999] A) 1 B) 2 C) 3 D) 4

Correct Answer: C

Solution :

$\underset{\text{3-hexyne-1-ene}}{\mathop{\overset{1\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}}}\,=\overset{2\,\,\,}{\mathop{CH}}\,-\overset{3\,}{\mathop{C}}\,\equiv \overset{4}{\mathop{C}}\,-\overset{5\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}}}\,-\overset{6\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}}}\,}}\,$ Three $\pi$ bonds.

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