Q)
(chatquestion)...(4) Van Arkel process
air i-
(1)
4.
Chemical leaching is useful in the concentration of
(1) copper pyrites
(2
(2) bauxite
(3) galena
(4) lead
5.
Self-reduction of CuS to Cu can be carried out in.
(1) bessemer convertor
(2) blast furnace
(3) both (1) and (2)
(4) none of these
11.
NaCN is sometimes added in the forth flotation
cant when ZnS and PbS
1 Answer
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