Calcium is obtained by

1.	Calcium is obtained by
Answer» Electrolysis of molten `CaCl_(2)` Electrolysis of a SOLUTION of `CaCl_(2)` in WATER Reduction of `CaCl_(2)` with CARBON Roasting of limestone Solution :Calcium is obtained by the electrolysis of a fused mass consisting of six parts calcium chloride and one part calcium fluoride at about `700^(@)C` in an electrolytic CELL made of graphite which acts as anode and a water-cooled cathode of iron which is suspendent from the top in the fused mass. On passing current, calcium is discharged at the cathode. At cathode: `Ca^(2+)+2e^(-)rarrCa` At anode: `2Cl^(Θ)rarrCl_(2)+2e^(-)`

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