InterviewSolution
`2Fe+Al_(2)O_(3) to 2Al+Fe_(2)O_(3)``ZnO+C to Zn +CO``Cr_(2)O_(3)+2Al to Al_(2)O_(3)+2Cr``2[AG(CN)_(2)]^(1-)+Zn to 2Ag +[Zn(CN)_(4)]^(2)`
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