Catalyst used in the dimerization of acetylene to prepare chloroprene is

Options

A. `HgSO_(4)+H_(2)SO_(4)`
B. `CuCl_(2)`
C. `CuCl_(2)+NH_(4)Cl`
D. CuCl_(2)+NH_(3)OH`

Answer

C

Explanation

`2HC-=CH underset(NH_(4)Cl)overset(Cu_(2)Cl_(2))to H_(2)=CH-C-=CH overset(HCl)to CH_(2)=CH-C-underset("Chloroprene")(underset(Cl)underset(|)(C))=CH_(2)`
`overset("Polymerisation")to [-CH_(2)-CH=underset(Cl)underset(|)(C)-CH_(2)]_(n)`