How will you classify hydrocabons?

Explanation

Hydrocarbons are classified into three classes such as Alkanes, Alkenes and Alkynes.
(a) Alkenes: These are hydrocarbons, which contain only single bonds. They are represented by the general formula `C_n H_(2n+2)` (where = 1,2,3) Ex: Methane `(CH_4)`
(b) Alkenes: The hydrocarbons, which contain one or more C = C bonds are called alkenes. These are unsaturated compounds. They are represented by the general formula `C_nH_2n`. Ex: Ethylene `(C_2H_4)`
(c) Alkynes: The hydrocarbons containing carbon to carbon triple bond are called alkynes. They have the general formula `C_nH_(2n-2)`. Ex: Acetylene `(C_2H_2)` 
(ii)• Lower hydrocarbons are gases at room temperature E.g. methane, ethane are gases.
• Alkanes are least reactive when alkynes are most reactive due to presence triple bond.
• Alkanes are saturated whereas alkenes and alkynes are unsaturated.
• They are insoluble in water.