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

In electrolysis of NaCl when Pt electode is taken then H_2 is liberated at cathode while with Hg cathode, it forms sodium amalgam. This is because

During the electrolysis of NaCl , when platinum electrode is taken, H_2 , is liberated at the cathode while-it form sodium amalgam with mercury cathode. This is because

On electrolysis of aqueous solution of sodium chloride "…………….." is liberated at cathode.