In which of the following pair, both the metals are obtained by electrolysis of their salts in molten state?
A
Na and Al
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B
Al and Cu
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C
Al and Fc
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D
Fc and Cu
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Solution
The correct option is A Na and Al The process of electrolysis uses a large amount of energy in the extraction of reactive metals like Na, K and Al. Sodium like other reactive metals can be extracted by electrolysis of molten sodium chloride.