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Chemistry
Chemistry
Problem
Poling process is used for: a. The removal of
Cu
2
O
\text{Cu}_2\text{O}
Cu
2
O
from Cu b. The removal of
Al
2
O
3
\text{Al}_2\text{O}_3
Al
2
O
3
from Al c. The removal of
Fe
2
O
3
\text{Fe}_2\text{O}_3
Fe
2
O
3
from Fe d. All of these
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