Match the extraction processes listed in Column I with metals listed in Column II. `{:("Column I","Column II"),(A. "Self reduction",p. "Lead"),(B. "Ca
Match the extraction processes listed in Column I with metals listed in Column II.
`{:("Column I","Column II"),(A. "Self reduction",p. "Lead"),(B. "Carbon reduction",q. "Silver"),(C. "Complex formation and displacement by metal ",r. "Copper"),(D. " Decomposition of iodide",s. "Boron"):}`
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