Q.

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

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a

Reduction of CaO with carbon

b

Reduction of CaO with hydrogen

c

Electrolysis of a mixture of anhydrous CaCl2

d

Electrolysis of molten Ca(OH)2

answer is A.

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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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