Question

Which among the following are unsaturated hydrocarbons?

1. \[\ce{H3C - CH2 - CH2 - CH3}\]
2. \[\ce{H3C - C ≡ C - CH3}\]
3. \[\begin{array}{cc}
   \ce{H3C - CH - CH3}\\
   |\phantom{..}\\
   \phantom{.}\ce{CH3}
   \end{array}\]
4. \[\begin{array}{cc}
   \ce{H3C - C = CH2}\\
   |\phantom{.}\\
   \phantom{..}\ce{CH3}
   \end{array}\]

Options

• (i) and (iii)

• (ii) and (iii)

• (ii) and (iv)

• (iii) and (iv)

Answer 1

(ii) and (iv)