Among the following groups of oxides, the group that cannot be reduced by carbon to give the respective metals.

Among the following groups of oxides, the group that cannot be reduced

1.	Among the following groups of oxides, the group that cannot be reduced by carbon to give the respective metals.
Answer» `Cu_(2)O, Sn_(2)O` `Fe_(2)O_(3)`, ZnO CuO, `K_(2)O` PbO , `Fe_(3)O_(4)` Solution :Oxides of highly reactive metals are not reduced by carbon.