Question

explain polling and electrolytic refining
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Answer 1

Answer:

Polling is used for the purification of copper or tin which contains oxide impurities. The impure metal is melted and stirred with green logs of wood. The heat of molten metal makes the green logs to liberate hydrocarbon gases which in turn reduce the metal oxide into metal.

Explanation:

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Answer 2

Answer:

Poling is a method used to purify metals that have oxidized impurities. It is typically used to purify metals like copper or tin that are in the impure form of a copper oxide or tin oxide. A log of wood which is still green is used to stir the liquid metal.

Electrolytic Refining: refining of a metal (such as copper) by electrolysis, the crude metal used as the anode going into solution and the pure metal being deposited upon the cathode. — called also electrolytic refining.

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