Which method is not correct given for refinin | vedclass

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Question

(D) The $Mond$ process is specifically used for the refining of nickel $(Ni)$.In this process,impure nickel is heated in a stream of carbon monoxide $

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Mond process : lead

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(D) The $Mond$ process is specifically used for the refining of nickel $(Ni)$.In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$ to form volatile nickel tetracarbonyl,$Ni(CO)_4$.This volatile complex is then decomposed at a higher temperature to obtain pure nickel.Therefore,the pairing of $Mond$ process with lead is incorrect.

Which method is not correct given for refining of crude metals?

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