Which among the following are unsaturated hydrocarbons?
(a) (i) and (iii)
(b) (ii) and (iii)
(c) (ii) and (iv)
(d) (iii) and (iv)."
Correct Answer: (c) (ii) and (iv)
Explanation: Unsaturated hydrocarbons have a double or triple bond in the structure. Both (ii) and (iv) structures have triple and double carbon-carbon bonds respectively.
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