Which of the following is the first member of alkyne homologous series?

Correct option is A

The correct answer is (a) Ethyne.
· Ethyne (commonly known as acetylene) is the first member of the alkyne homologous series. Alkynes are hydrocarbons that contain at least one carbon-carbon triple bond, and ethyne has the simplest structure with two carbon atoms joined by a triple bond, having the chemical formula C₂H₂.
Information Booster:
· Ethene: It is the first member of the alkene series, containing a carbon-carbon double bond, with the formula C₂H₄.
· Propyne: It is the third member of the alkyne series, with three carbon atoms, having the formula C₃H₄.
· Methane: It is the first member of the alkane series, with a single carbon atom bonded to four hydrogen atoms, having the formula CH₄.