MCQ
If impurities can be oxidized more easily than the metal itself, which method is used?
- ALiquation method.
- BDistillation method.
- ✓Oxidation method.
- DNone of these.
✓
Answer
Correct option: C.
Oxidation method.
Oxidation process refers to a set of chemical treatment procedures designed to remove organic and inorganic materials in water and waste water by oxidation through reactions by hydroxyl ions.
Oxidation method is used when impurities are easily oxidisable. For example, lead as an impurity in silver is removed by heating, the impurity is easily oxidised to $\text{PbO}$ and removed by air.
Oxidation method is used when impurities are easily oxidisable. For example, lead as an impurity in silver is removed by heating, the impurity is easily oxidised to $\text{PbO}$ and removed by air.
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