Which of the following are unsaturated hydrocarbons?
(i) Alkanes , (ii) Alkenes
(iii) Alkynes , (iv) Arenes

Options

A. (1) (ii), (iii)
B. (2) (ii), (iii), (iv)`
C. (3) (i), (ii), (iii)
D. (4) (iii), (iv)

Answer

B

Explanation

Generally speaking, compound whose molecules contain only single bonds, such as alkanes are referred to as saturated compounds because these compounds contain the maximum number of `H` atoms that the carbon compound can process.
Compounds with multiple bonds, such as alkenes, alkynes and aromatic hydroxarbons, are called unsaturated hydrocarbons because they possess fewer than the maximum number of `H` atoms, and they are capable of reacting with hydrogen under the proper conditions.