question_answer 52)

      Which among the following are unsaturated hydrocarbons? (i) (ii) (iii)       (iv) (a) (i) and (iii)                    (b) (ii) and (iii)                     (c) (ii) and (iv)                    (d) (iii) and (iv)

Answer:

                  (c) Unsaturated hydrocarbons have double or triple bond in the structure. Both (ii) and (iv) structures have triple and double carbon-carbon bonds respectively.