Easy
The poling process is used for:
- ARemoval of $Cu_2O$ from $Cu$
- BRemoval of $Al_2O_3$ from $Al$
- CRemoval of $Fe_2O_3$ from $Fe$
- DAll of these
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Explain the electrolytic refining of metals.
Difficult
View SolutionThe method of electrolytic refining is not suitable in the extraction of
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View SolutionWhen copper is purified by the electrorefining process,noble metals like $Ag$ and $Au$ are found in:
Easy
View SolutionMatch the following List-$I$ (Method) with List-$II$ (Metal refined):
List-$I$ (Method) List-$II$ (Metal refined) $(A)$ Zone refining $(I)$ $Sn$ $(B)$ Liquation $(II)$ $In$ $(C)$ Vapour phase refining $(III)$ $Zn$ $(D)$ Distillation $(IV)$ $Zr$ - $(V)$ $Al$
The correct answer is:
| List-$I$ (Method) | List-$II$ (Metal refined) |
|---|---|
| $(A)$ Zone refining | $(I)$ $Sn$ |
| $(B)$ Liquation | $(II)$ $In$ |
| $(C)$ Vapour phase refining | $(III)$ $Zn$ |
| $(D)$ Distillation | $(IV)$ $Zr$ |
| - | $(V)$ $Al$ |
The correct answer is:
Which method is used to obtain ultra-pure copper?
Easy
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