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Question

Down's method is used for the extraction of :

A
Al
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B
Na
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C
Mg
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D
Cu
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Solution

The correct option is B Na
Sodium (Na) metal is extracted by "Down's Method". Down's method is based on the electrolysis of fused NaCl.
Cathode: 2Na++2e2Na (Reduction)

Anode: 2ClCl2+2e (Oxidation)

Overall reaction: 2Na++2Cl2Na+Cl2
Option B is correct.

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