Question

What is Polling ??⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀​

Answer 1

$\huge\underline\blue{\sf Polling}$

Used to purify Cu , Pb

This process used for metal having their own oxide.In this process wodden pole is heated with molten metal, which provide C and H to metal which reduce Impurities of metal oxide.

Answer 2

Answer:

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☆☆☆.Poling is a [metallurgical] method employed in the purification of copper which contains copper oxide as an impurity and also in the purification of tin ("Sn") which contains tin oxide (stannic oxide or "SnO2") as an impurity.☆☆☆

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