The cyanide process of gold extraction involves leaching out gold from its ore with `CN^(-)` in the presence of Q in water to form R . Subsequently , R is treated with T to obtain Au and Z. Choose the correct option (s)

Answer

A,B,C

Explanation

The reaction are as follows :
`Au+CN^(-) +underset((Q))(Q_(2)) +H_(2)O to underset(R )([Au(CN)_(2)]^(-))+OH^(-)`
`underset((R ))([Au(CN)_(2)]^(-))+underset((T))(Zn)+H_(2)O to underset((Z))([Zn(CN)_(4)]^(2-))+Au`