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Several metals are commercially produced by reduction of oxides by carbon.

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Several metals are commercially produced by reduction of oxides by carbon. The oxides which can be reduced with carbon are 

(a)   ZnO & Fe2O3 

(b)  CaO & Cr2O3 

(c)  BaO & U3O8 

(d)  SiO2 & Al2O3 

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(a)  ZnO & Fe2O3

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