Question

The number of `sigma-and pi` bonds present in pent-4en-1-yne is :
A. 3, 10
B. 9,4
C. 4,9
D. 10, 3

Answer 1

Correct Answer - D
The structure of pent-4-en-1-yne is
`H-underset(1)(C)-=underset(2)(C)-underset(H)underset(3|)oversetoverset(H)(|)C-underset(4)oversetoverset(H)(|)(C )=underset(5)oversetoverset(H)(|)(C)-H`
`:.` It contains10 `sigma` and `3pi` - bonds.