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oxidation reactions
1) cu+o2 gives rise to 2cuo
2)2Fe2o3+3C gives rise to 4 Fe +3Co2
3) 2Pbo+C gives rise to 2Pb+ Co2

reduction reactions
1) 2Fe2o3+3C gives rise to 4Fe+3Co2
2) 2Pbo+C gives rise to 2Pbo+Co2
 are the examples for oxidation and reduction reactions
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