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Q.

The following equation represents a method of purification of nickel by,

Ni(impure) + 2CO → (320K) Ni(CO)4

Ni(CO)4 420K → Ni(pure) + 4CO

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a

Zone refining

b

van Arkel method

c

Cupellation     

d

Mond’s process

answer is B.

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Detailed Solution

detailed_solution_thumbnail

 Mond’s process involves

            Ni(impure) + 2CO → (320K) Ni(CO)4

            Ni(CO)4 420K → Ni(pure) + 4CO

This process is specially used for Nickel. 

Hence, option (B) is correct.

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