Question

The number of $\sigma$ and $\pi$ bonds present in 1-butene-3-yne is

• A. 7 and 3
• B. 5 and 5
• C. 7 and 2
• D. 6 and 4

Answer 1

Answer: (A)

Hence, total $7\sigma$ and $3\pi -$ bonds are present in l-butene-3-yne.