A) For the removal of \[C{{u}_{2}}O\] from Cu
B) For the removal of \[A{{l}_{2}}{{O}_{3}}\] from Al
C) For the removal of \[F{{e}_{2}}{{O}_{3}}\] from Fe
D) For the removal of \[MgC{{l}_{2}}\] from Mg
Correct Answer: A
Solution :
During polling process, wood gas reduces \[C{{u}_{2}}O\] to Cu. Hence, it is employed for the removal of \[C{{u}_{2}}O\] from Cu.
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