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The metals obtained from their molten chlorides by the process of electrolytic reduction are :
A metal and a non-metal that exists in liquid state at the room temperature are respectively :
Oxides of aluminium and zinc are :
The metals produced by various reduction processes are not very pure. They contain impurities, which must be removed to obtain pure metals. The most widely used method for refining impure metals is electrolytic refining.
A metal is used in thermit process. When this metal is heated with the oxide of a less reactive metal, the oxide formed is amphoteric in nature. The metal and the oxide formed are :
A metal 'X' is used in thermit process. When 'X' is heated with oxygen, it gives an oxide 'Y', which is amphoteric in nature. 'X' and 'Y' respectively are :
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