Question

Pick the odd member from the list, giving reasons:

विकल्प

• Copper oxide

• Aluminium oxide

• Sodium oxide

• Magnesium oxide

Answer 1

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.