Among the following oxides which one is converted to metal by treated – InterviewSolution

1.	Among the following oxides which one is converted to metal by treated with hydrogen ?
Answer» `Al_(2)O_(3)` `ZnO` `CuO` `BaO` Solution :In metals, which have lesser affinity TOWARDS oxygen , their oxides can be REDUCED by hydrogens. Among the given metals , COPPER has LESS affinity towards oxygen. Hence its oxide can be reduced by hydrogen .

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