A) \[2\]
B) \[5\]
C) \[4\]
D) \[3\]
Correct Answer: C
Solution :
The number of \[\pi \] bonds in \[C{{H}_{2}}\underset{1}{\mathop{=}}\,CH-CH\underset{1}{\mathop{=}}\,CH-C\underset{1}{\mathop{\equiv }}\,CH\] is four
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