MetallurgyHard
Question
Poling process :
Options
A.reduces SnO2 to Sn
B.oxidises impurities like iron and removes as scum
C.uses green poles
D.all of the above are correct
Solution
This method is used for the purification of those impure metals which contain the impurities of their own impurities for example CuO in Cu and SnO in Sn.
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