Explanation:

Acetylene (systematic name: ethyne) is the chemical compound with the formula C2H2. It is a hydrocarbon and the simplest alkyne. This colourless gas is widely used as a fuel and a chemical building block. It contains a triple carbon-carbon bond. The acidic nature of H-atom present at the end of the triple bonded carbon atom is due to the higher electronegativity of the sp-hybridised carbon.