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Question

In Mond's process, nickel is made to react with :

A
C
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B
CO
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C
H2
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D
O2
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Solution

The correct option is B CO
Mond process is a method for refining nickel. In this process, Ni is heated in the presence of carbon monoxide to form Ni(CO)4 which on further heating decomposes to give pure nickel.
Ni(Impure)+4CONi(CO)4Ni(Pure)+4CO

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