In vapour phase refining,metal A is purified | vedclass

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(C) $1$. Van Arkel method is used for the purification of metals like $Zr$ (Zirconium) and $Ti$ (Titanium). In this process,the crude metal is heated

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$Zr, Ni$

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(C) $1$. Van Arkel method is used for the purification of metals like $Zr$ (Zirconium) and $Ti$ (Titanium). In this process,the crude metal is heated in an evacuated vessel with iodine to form a volatile metal iodide,which is then decomposed on a tungsten filament at high temperature to obtain pure metal.$2$. Mond's process is specifically used for the purification of $Ni$ (Nickel). In this process,impure nickel is heated in a stream of carbon monoxide to form volatile nickel tetracarbonyl,$Ni(CO)_4$,which is then decomposed at higher temperatures to yield pure nickel.$3$. Therefore,$A$ can be $Zr$ or $Ti$,and $B$ is $Ni$. Comparing with the options,$Zr$ and $Ni$ is a valid pair for $A$ and $B$ respectively.

In vapour phase refining,metal $A$ is purified by Van Arkel method and metal $B$ is purified by Mond's process. $A$ and $B$ are respectively:

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