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प्रश्न
The following question relate to the extraction of aluminium by electrolysis.
Name the other aluminium containing compound added to alumina and state the significance.
The following question relate to the extraction of aluminium by electrolysis.
Name the other aluminium containing compound added to alumina.
उत्तर
Cryolite
significance: Cryolite (Na3AlF6) is added along with alumina and fluorspar. It lowers the fusion temperature from 2050°C to 950°C and enhances conductivity.
संबंधित प्रश्न
For the substance given below, describe the role played in the extraction of aluminium.
Graphite
Give the chemical names and formulae of the main ores of zinc.
| Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction. |
Name a chemical used for dissolving aluminium oxide. In which state is the chemical used?
The reason for using Aluminium in the alloy duralumin is ______.
In order to obtain one tone of aluminium, the following inputs are required:
4 tones of bauxite, 150 Kg of sodium hydroxide and 600 Kg of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
In construction work, why is the alloy of aluminium, duralumin used rather than pure aluminium.
Describe the role played in the extraction of aluminum : Graphite
During the concentration of bauxite ore, aluminium goes in ______ part because of its ______ nature.
Explain the reason:
Why 'food containing iron salts' should not be cooked in aluminium utensils?
Name a metal which is found abundantly in the Earth's crust.
State the relevant reason for the following:
A layer of powered coke is used over the electrolytic mixture in Hall Heroult’s process.
