MacArthur-Forrest process is used for the extraction of ______.

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MacArthur-Forrest process is used for the extraction of silver. Explanation: The MacArthur-Forrest process is used to extract silver from its low-grade ores. In this method, the ore is treated with a dilute sodium cyanide (NaCN) solution in the presence of air, which dissolves silver as a complex. \ce{Ag + NaCN + O2 + H2O -> Na[Ag(CN)1] + NaOH}

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