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Chemistry
Poling process is used
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Q. Poling process is used
General Principles and Processes of Isolation of Elements
A
for the removal of $Cu_{2}O$ from $Cu$
B
for the removal of $Al_{2}O_{3}$ from $Al$
C
for the removal of $Fe_{2}O_{3}$ from $Fe$
D
In all the above
Solution:
Poling (metallurgy) is a method employed in the purification of copper which contains cuprous oxide as an impurity