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Refining of Metals

Which process...

Question

Which process is used to reduce aluminium oxide to aluminium?

A

Electrolytic reduction

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B

Roasting

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C

Hydraulic washing

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D

Thermit process

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Solution

The correct option is A
Electrolytic reduction

Reactive metals like sodium, potassium, calcium and aluminium are obtained by electrolytic reduction as they cannot be obtained from their compounds by heating with carbon.

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Which process is used to reduce roasted metallic oxide to metal in molten conditions?

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(d) I Hall's process bauxite is leached with the help of

{N a}_{2} {C O}_{3}

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