A) Reduction of \[MgO\] by coke
B) Electrolysis of aqueous solution of \[Mg(N{{O}_{3}})\]
C) Displacement of \[Mg\] by iron from \[MgS{{O}_{4}}\] solution
D) Electrolysis of molten \[MgC{{l}_{2}}\]
Correct Answer: D
Solution :
\[\underset{\text{(Molten)}}{\mathop{MgC{{l}_{2}}}}\,\xrightarrow{Electrolysis}\underset{\text{Cation}}{\mathop{M{{g}^{+2}}}}\,+\underset{\text{Anion}}{\mathop{2Cl}}\,\] Anode - \[2C{{l}^{-}}\to 2Cl+2{{e}^{-}}\],\[Cl+Cl\to C{{l}_{2}}\] Cathode - \[M{{g}^{+2}}+2{{e}^{-}}\to Mg\]
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