Which of the following metals is extracted by self reduction method from its sulphade ore?

Which of the following metal is obtained by self reduction method?

Which of the following metal oxides are reduced by self-reduction method ?

Which of the following metal oxides are reduced by self-reduction method ?

Which of the following metal oxides are reduced by self-reduction method ?

Which of the following metal (s) is /are commercially extracted by self reduction method from their correspoindign ore ?

Which of the following metal (s) is /are commercially extracted by self reduction method from their correspoindign ore ?

Among the following metals how many metals are extracted by self-reduction method from their respective ores. (Give total number ).Hg , Zn, Cu, Al, Mg , Pb, Fe, Sn

Among the following metals how many metals are extracted by self-reduction method from their respective ores. (Give total number ).Hg , Zn, Cu, Al, Mg , Pb, Fe, Sn