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Smelting

Which of the ...

Question

Which of the following metals can not be extracted by carbon reduction process?

A

P b

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B

A l

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C

S n

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D

Z n

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Solution

The correct option is A $A l$
Oxides of strong electropositive metals such as $K, C a, N a, A l$ and $M g$ are very stable. It is difficult to reduce them into the metallic state by carbon reduction. Such metals are extracted by passing electricity through their fused chlorides/oxides/hydroxides.

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