In cyamide extraction process of silver from argentite ore, the oxidiz – McqOptions

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1.	In cyamide extraction process of silver from argentite ore, the oxidizing and reducing agents are respectively.
A.	O2 and CO2
B.	O2 and Zn dust
C.	HNO3 and Zn dust
D.	HNO3 and CO
Answer» C. HNO3 and Zn dust

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