the metal oxide which cannot be reduced to metal by carbon is a,pbo b,Al2O3 c,ZnO d, Feo
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option c is correct for
PbO. D. Al2O3. MEDIUM. Answer. Reduction of the oxide with carbon at high temperature is known as smelting. The oxides of less electropositive metals like Pb, Zn, Fe, Sn, Cu etc. are ... Hence, the correct option is C.
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