JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Which one of the following processes is used for manufacture of calcium? [WB-JEE 2008]

(A)Reduction of CaO with carbon
(B)Reduction of CaO with hydrogen
(C)Electrolysis of a mixture of anhydrous and KClCorrect
(D)Electrolysis of molten

Answer: (C)

Solution

Calcium is manufactured by electrolysing a fused mixture of anhydrous and KCl (which lowers the melting point of the electrolyte) in a cell with a graphite anode and iron cathode: at the cathode , while is

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Question ID VK-137668