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Question:

The number of sigma (σ) and π(π) bonds in pent-2-en-4-yne are:

10σ bonds and 3π bonds

8σ bonds and 5π bonds

11σ bonds and 2π bonds

13σ bonds and no π bonds

Solution:

Correct option is A. 10σ bonds and 3π bonds
The structure of pent-2-en-4-yne is as below:
Here
No of σ bonds are 10 and No of π bonds are 3
So option A is correct