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Chemistry
Polling process is used for
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Q. Polling process is used for
NTA Abhyas
NTA Abhyas 2020
General Principles and Processes of Isolation of Elements
A
The removal of $\text{Cu}_{\text{2}} \text{O}$ from $Cu$
100%
B
The removal of $Al_{2}O_{3}$ from $Al$
0%
C
The removal of $Fe_{2}O_{3}$ from $Fe$
0%
D
All of these
0%
Solution:
When impure metal has impurity of its own metal oxide, then poling process is used, i.g., impure $Cu$ and $Sn$ are purified by this method.