The number of \( \pi \)-bonds in \( \mathrm{CH}_{2} \underset{1 \pi...

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The number of \( \pi \)-bonds in \( \mathrm{CH}_{2} \underset{1 \pi}{=} \mathrm{CH}-\mathrm{CH}=\underset{1 \pi}{=} \mathrm{CH}-\mathrm{C}=\underset{2 \pi}{\mathrm{CH}} \) is
(Karnataka CET 2013)
(a) 2
(b) 5
(c) 4
(d) 3
\( \mathrm{P} \)
W
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