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प्रश्न
Pick the odd member from the list, giving reasons:
विकल्प
Copper oxide
Aluminium oxide
Sodium oxide
Magnesium oxide
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उत्तर
Copper oxide
Reason:
Copper oxide, because CuO is less reactive, can be reduced by C, CO or hydrogen, whereas Al2O3, Na2O, MgO are reduced by electrolysis.
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