Which metal is ultrapurified by carbon monoxi | vedclass

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(D) The process used for the purification of $Ni$ (Nickel) is known as Mond's process. In this process,impure nickel is heated in a stream of carbon m

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$Ni$

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(D) The process used for the purification of $Ni$ (Nickel) is known as Mond's process. In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$ 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 decomposed at a higher temperature to obtain pure nickel: $[Ni(CO)_4](g) \xrightarrow{450-470 \ K} Ni(s) + 4CO(g)$.

List-$I$	List-$II$
$A$. Van Arkel method	$P$. Purification of titanium
$B$. Solvay process	$Q$. Manufacture of $Na_2CO_3$
$C$. Bessemerisation	$R$. Reduction of copper
$D$. Hall-$H$éroult process	$S$. Extraction of aluminium

Which metal is ultrapurified by carbon monoxide?

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The method used for producing semiconductor grade metals of high purity is

Match the List-$I$ and List-$II$.

List-$I$ List-$II$

$A$. Van Arkel method $P$. Purification of titanium

$B$. Solvay process $Q$. Manufacture of $Na_2CO_3$

$C$. Bessemerisation $R$. Reduction of copper

$D$. Hall-$H$éroult process $S$. Extraction of aluminium

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