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Which one of the following processes is/are not used for the manufacture of calcium?

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Electrolysis of a mixture of anhydrous CaCl₂

Electrolysis of molten Ca(OH)₂

Reduction of CaO with carbon

Reduction of CaO with hydrogen

answer is A, B, D.

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Detailed Solution

calcium oxide on reduction with carbon or hydrogen forms calcium which further reacts to form calcium carbides, calcium hydrides

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