Which of the following metals can be extracted through alkali leaching technique?
(1) Cu        (2) Sn        (3) Pb        (4) Au

Answer: Option 3
Cynaide Leaching: Ag, Au
Ammonia Leaching: Ni, Cu, Co
Alkali Leaching: Al, Zn, Pb
Acid Leaching: ZnS, PbS

Leave a Reply

Your email address will not be published. Required fields are marked *