Which method is used for the purification of | vedclass

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(A) The purification of $Ni$ (Nickel) is carried out by the $Mond's$ process.In this process,impure nickel is heated in a stream of carbon monoxide $(

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Mond's process

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(A) The purification of $Ni$ (Nickel) is carried out by the $Mond's$ process.In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$ at $330-350 \ K$ to form a volatile complex,nickel tetracarbonyl,$[Ni(CO)_4]$.The reaction is: $Ni(s) + 4CO(g) \xrightarrow{330-350 \ K} [Ni(CO)_4](g)$.This complex is then heated to a higher temperature $(450-470 \ K)$,causing it to decompose to give pure nickel.The reaction is: $[Ni(CO)_4](g) \xrightarrow{450-470 \ K} Ni(s) + 4CO(g)$.

List-$I$ (Process)	List-$II$ (Metal)
$A$. Hall-Heroult process	$I$. $Ti$
$B$. Mond process	$II$. $In$
$C$. van-Arkel process	$III$. $Al$
$D$. Zone refining process	$IV$. $Ni$

Which method is used for the purification of $Ni$?

Similar Questions

Which process of purification is represented by the following scheme?
$\text{Ti}_{\text{impure}} + 2I_2$ $\xrightarrow{250^{\circ}C} TiI_4$ $\xrightarrow{1400^{\circ}C} \text{Ti}_{\text{pure}} + 2I_2$

The zone refining of metal is based on the principle of

Which of the following is not correctly matched?

Match the following:
List-$I$ (Process) List-$II$ (Metal)
$A$. Hall-Heroult process $I$. $Ti$
$B$. Mond process $II$. $In$
$C$. van-Arkel process $III$. $Al$
$D$. Zone refining process $IV$. $Ni$

The correct answer is:

The cupellation process is used in the metallurgy of:

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