The correct option is C CnH2n−2
∙ Alkynes are hydrocarbons having atleast one triple bond between its carbon atoms. The general formula for alkynes is CnH2n−2.
∙ Alkanes are hydrocarbons having only single bonds between its carbon atoms. The general formula for alkanes is CnH2n+2.
∙ Alkenes are hydrocarbons having atleast one double bond between its carbon atoms. The general formula for alkenes is CnH2n.