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Q.
Number of $\sigma$ and $\pi$ bonds in acetylene are:
Uttarkhand PMTUttarkhand PMT 2004
Solution:
$ H \overset{\sigma}{-} C \underset{\sigma \text{and} 2\pi}{\equiv} C \overset{\sigma}{-} H$
Hence, In acetylene, there are $ 3\sigma $ and $ 2\pi $ bond,