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Recent questions tagged telegram-49383

(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

asked Jan 27, 2020 by balaji.thirumalai

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