$\mathrm{Ni}$ anode is used in the electrolytic extraction of

$\mathrm{Ni}$ anode is used in the electrolytic extraction of
  1. $\mathrm{Al}$
  2. $\mathrm{Mg}$
  3. Na by Down's process
  4. Na by Castner's process

Solution

In Castner's process for the extraction of sodium, $\mathrm{Ni}$ anode is used.

Asked in: AP EAMCET 2012

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