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Metallic magnesium is prepared by...

Metallic magnesium is prepared by

A

Reduction of `MgO` by coke

B

Electrolysis of aqueous solution of `Mg(NO_(3))`

C

Displacement of `Mg` by iron from `MgSO_(4)` solution

D

Electrolysis of molten `MgCl_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`{:(MgCl_(2),overset("Electrolysis")(rarr),"Mg"^(+2),+,2Cl),("(Molten)",,"Cation",,"Anion"):}`
Anode : `2Cl^(-) rarr 2Cl+2e^(-), Cl+Cl rarr Cl_(3)`
Cathode : `Mg^(+2)+2e^(-) rarr Mg`
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