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प्रश्न
For the substance given below, describe the role played in the extraction of aluminium.
Cryolite
उत्तर
- It lowers the fusion temperature from 2050°C to 950°C and enhances conductivity.
- This, in turn, improves the electrolyte's conductivity and reduces the need for electricity, which is the primary energy source for alumina reduction.
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संबंधित प्रश्न
Name the process by which the refining of aluminium is done ?
Name the following:
The chief ore of aluminium.
Aluminium is a more active metal than iron, but suffers less corrosion. Why?
Why is food containing iron salts should not be cooked in aluminium utensils?
Aluminium is extracted from its chief ore bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Write an equation for the reaction which takes place at the anode during the extraction of aluminium by the electrolytic process.
The following question relate to the extraction of aluminium by electrolysis.
Explain why is it necessary to renew the anode periodically.
Name the following:
A metal which is always present in the amalgam.
Answer the following question:
Write the chemical formula of one main ore of iron and aluminium.
Write the balanced chemical equation to show the concentration of ore in Baeyer’s process.
Aluminium hydroxide to alumina
The compound that is not a constituent of the electrolytic mixture used in Hall-Heroult's process is ______.
