In Castner-Kellner cell for production of sodium hydroxide

Brine is electrolyzed using graphite electrode

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Molten sodium chloride is used

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Sodium amalgam is formed at mercury cathode

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Brine is electrolyzed with Pt electrodes

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Solution

The correct option is C
Sodium amalgam is formed at mercury cathode

Sodium amalgam is formed at mercury cathode. The rest others are all incorrect.

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In Castner Kellner cell:

N a O H

N a O H

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