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प्रश्न
Name the alloy used for the following purpose.
Surgical instruments
उत्तर
Stainless steel
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संबंधित प्रश्न
Explain why In the electrolysis of alumina using the Hall Heroult's Process the electrolyte is covered with powdered coke
Name the constituents of Duralumin.
Name the constituents of Brass.
For graphite, explain its significance in the extraction of 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.
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 substance added along with aluminium in the Hall-Heroult's process.
How is aluminium obtained from pure ore?
An aqueous solution of sodium chloride is not used for electrolytic reduction of sodium metal. Why?
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.
(i) Name the process used for purification of bauxite.
(ii) Write the equation to show the action of heat on aluminium hydroxide.
Describe the role played in the extraction of aluminum:
Sodium hydroxide
