JEE Main Chemistry question

The electrolyte employed in the extraction of sodium by Down's electrolysis method is:

(A)An aqueous solution of NaCl
(B)Molten NaClCorrect
(C)Molten NaOH
(D)A molten mixture of and NaCl

Answer: (B)

Solution

Down's process electrolyses fused (molten) sodium chloride (mixed with /KF to lower its melting point) to directly deposit metallic sodium at the cathode. An aqueous NaCl solution (A) cannot yield metallic Na (it instead gives

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Question ID VK-137904