Which of the following statements are correct in connection with the extraction of silver?

Options

A. silver is obatined as a by-product in the extraction of copper, lead and zinc.
B. Silver is obtained from the anode slime formed in the electrolytic refining of copper and zinc
C. Zinc is used to extract silver by solvent extraction from molten lead in Parke's process
D. Pttinsons process is used for desilverization of lead

Answer

A, B, C, D