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In electrolysis of NaCl when Pt electrod...

In electrolysis of NaCl when Pt electrode is taken then `H_(2)` is liberated at cathode while with Hg cathode it forms sodium amalgam because.

A

Hg is more inert than Pt

B

More voltage is required to reduce `H^(+)` at Hg than at Pt

C

Na dissolves in Hg but it does not dissolve in Pt

D

Concentration of `H^(+)` ions is more when Pt electrode is taken

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The correct Answer is:
B
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