Mond process is used for refining:

N i

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A g

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S n

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A l

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Solution

The correct option is A $N i$
Mond process is used for refining Nickel $(N i)$ .

First, the impure nickel reacts with $C O$ to give $N i (C O)_{4}$ and it is then heated to give pure nickel.

$N i + 4 C O 330 - 350 K - ----- \to N i (C O)_{4}$

$N i (C O)_{4} 493 - 523 K - ----- \to N i + 4 C O$

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Similar questions

Describe the principle involved in each of the following processes.

(i) Mond process for refining of Nickel.
(ii) Column Chromatography for purification of rare elements.

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