question_answer

The number of a and n bonds present in l-buten-3-yne are

A)  \[7\sigma \]and\[5\pi \]           

B) \[6\sigma \] and\[4\pi \]

C)  \[6\sigma \]and\[6\pi \]           

D)  \[7\sigma \]and \[3\pi \]

Correct Answer: D

Solution :

l-buten-3-yne can be written as. It has \[3\pi \] and \[7\sigma \] bonds. Hence, the correct option is [d].