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Ores and Minerals

Aluminium is ...

Question

Aluminium is obtained from $A l_{2} O_{3}$ by _____.

A

Thermal reduction

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B

Hydro metallurgical method

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C

Electrolytic reduction

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D

Reduction by iron

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Solution

The correct option is D Electrolytic reduction
Aluminium is obtained from alumina using electrolytic process.

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Similar questions

Q. Aluminium is obtained by the electrolysis of pure

A l_{2} O_{3}

, dissolved in:

Q. Aluminium is extracted from alumina

(A l_{2} O_{3})

by electrolysis.

Q. The aluminium metal is obtained by the reduction of aluminium oxide with:

Q. Assertion :In the electrolytic reduction of

A l_{2} O_{3}

cryolite is used. Reason: Cryolite is an ore of aluminium.

Q. Assertion :Al obtained only by electrolytic reduction of Alumina (pure) Reason: Aluminium metal has a strong affinity for oxygen and the oxide of Al is

A l_{2} O_{3}

, which is a very stable oxide. Hence ordinary chemically reducing agents are not sufficient to reduce

A l_{2} O_{3}

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