Poling process `:`A. reduces `SnO_(2)` to `Sn`.B. involves the liberat – InterviewSolution

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1.	Poling process `:`A. reduces `SnO_(2)` to `Sn`.B. involves the liberation of reducing gases like hydrocarbons.C. uses poles of freshely cut green woodD. .all of the above are correct.
Answer» Correct Answer - 4 This method is used for the purificationo of those impure metals which contain the impurities of their own impurities for examples `CuO` in Cu and SnO in Sn.

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