How many types of polymerisation are possible in alkynes ?

Explanation

Alkyne undergoes two types of polymerisation reaction
`(i)` Linear Polymerisation :
Ethyne forms linear polymer, when passed into a solution of cuprous chloride and ammonium chloride.
`2CH-=Choverset(Cl_(2)//NH_(4)Cl)(to)CH_(2)=underset("Vinyl ethylene")underset(C-=CH)underset(|)(C )H`
`(ii)` Cyclic polymerisation :
Ethyne undergoes cyclic polymerisation on passing through red hot iron tube. Three molecules of ethyne polymerises to benzene.
`3CH-=CHoverset("Red Hot Iron tube")underset(873K)(to)`