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Aluminium oxide is not reduced by chemical reactions since
- a)Aluminium oxide is reactive
- b)Reducing agents contaminate
- c)Aluminium oxide is highly stable
- d)The process pollutes the environment
Correct answer is option 'C'. Can you explain this answer?
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Aluminium oxide is not reduced by chemical reactions sincea)Aluminium...
Aluminium oxide is a highly stable oxide of aluminium. Thus, it is chemically inert. Metal oxides can be reduced to the corresponding metal by using a suitable reducing agent. But the choice of the reducing agent depends upon the reactivity of the metal. If the metal to be produced is a very reactive metal like alkali metals, alkaline earth metals and aluminium, then the reduction of the oxide can be done by only the electrolytic method.
The oxides of less reactive metals like zinc, iron etc. are reduced by a number of reducing agents like carbon or coke or carbon monoxide.
This is why aluminium is extracted from its ore bauxite by electrolytic reduction. The bauxite ore is first converted into alumina which is then converted into aluminium by the electrolysis of mixture of alumina and cryolite via the Hall and Heroult process.
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Aluminium oxide is not reduced by chemical reactions sincea)Aluminium oxide is reactiveb)Reducing agents contaminatec)Aluminium oxide is highly stabled)The process pollutes the environmentCorrect answer is option 'C'. Can you explain this answer?
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