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प्रश्न
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.
उत्तर
Duralumin is light, strong and more resistant to corrosion than aluminium.
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संबंधित प्रश्न
Name the following: A compound added to lower the fusion temperature of electrolytic bath in the extraction of aluminum
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.
Name the following:
The chief ore of aluminium.
Give reason for the following:
Extraction of aluminium was very difficult in the beginning.
Aluminium is a more active metal than iron, but suffers less corrosion. Why?
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.
Give the equation for the reaction that takes place at the cathode
During the concentration of bauxite ore, aluminium goes in ______ part because of its ______ nature.
Name the following:
A metal which is always present in the amalgam.
State true or false.
Bauxite is the main ore of aluminium.
