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प्रश्न
For graphite, explain its significance in the extraction of aluminium.
उत्तर
Thick graphite rods are used as the anode in electrolytic reduction.
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संबंधित प्रश्न
Name the process by which the refining of aluminium is done ?
Explain the following:
In construction work, why is the alloy of aluminium-duralumin used rather than pure aluminium?
Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is
extracted from it by electrolytic reduction
Mention one reason for the use of aluminium in thermite welding ?
Name the following:
The materials used as electrodes in the electrolytic extraction of aluminium.
Give reason for the following:
Aluminium oxide cannot be reduced by carbon.
What is the role of cryolite (NaAlF6) in the electrolytic reduction of alumina in the Hall's process?
Name the following :
The compound formed by the reaction between calcium oxide and silica.
Name the alloy used for the following purpose.
Surgical instruments
Fused alumina is reduced to aluminium by electrolytic reduction, since ______.
Write the balanced chemical equation to show the concentration of ore in Baeyer’s process.
Sodium aluminate to aluminium hydroxide
