During the electrolytic refining of silver,th | vedclass

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(D) In the electrolytic refining of silver,the impure silver acts as the anode and pure silver acts as the cathode. Metals that are less reactive than

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$Au$

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(D) In the electrolytic refining of silver,the impure silver acts as the anode and pure silver acts as the cathode. Metals that are less reactive than silver $(Ag)$ do not dissolve in the electrolyte and settle down at the bottom of the anode as anode mud. Since gold $(Au)$ is less reactive than silver,it remains in the anode mud. Metals more reactive than silver,such as $Zn$ and $Cu$,dissolve into the electrolyte solution as ions.

Column-$I$	Column-$II$
$(a)$ Boron	$(i)$ Van Arkel method
$(b)$ Tin	$(ii)$ Mond's process
$(c)$ Zirconium	$(iii)$ Liquation
$(d)$ Nickel	$(iv)$ Zone refining

During the electrolytic refining of silver,the anode mud contains:

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$Si$ and $Ge$ used for semiconductors are required to be of high purity and hence purified by:

Match the elements in Column-$I$ with methods of purification in Column-$II$.

Column-$I$ Column-$II$

$(a)$ Boron $(i)$ Van Arkel method

$(b)$ Tin $(ii)$ Mond's process

$(c)$ Zirconium $(iii)$ Liquation

$(d)$ Nickel $(iv)$ Zone refining

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