Which among the following are unsaturated hydrocarbons?
(a) (i) and (iii) (b) (ii) and (iii)
(c) (ii) and (iv) (d) (iii) and (iv)
Answer:(c)
Solution:
Unsaturated hydrocarbons have double or triple bond in their structures.
We can see that structure (ii) has a triple bond.
Structure (iv) has a double bond
Therefore, option (c) is correct.