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प्रश्न
Name a metal which is found abundantly in the Earth's crust.
उत्तर
A metal which is found abundantly in the Earth's crust is 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
Give reason for the following:
Nitric acid can be stored in aluminium containers.
For the substance listed below, explain its role in the extraction of aluminium: Cryolite
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.
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. Which particular property of cast iron makes it unsuitable for the construction of bridges?
Answer the following question :
Name a metal which is found abundantly in earth's crust.
During the concentration of bauxite ore, aluminium goes in ______ part because of its ______ nature.
Explain with reason:
A neutral gas other than oxygen is formed at the anode during the electrolysis of fused alumina.
The following sketch illustrates the process of conversion of Alumina to Aluminium:
- Name the constituent of the electrolyte mixture which has a divalent metal in it.
- Name the powdered substances ‘X’ sprinkled on the surface of the electrolyte mixture.
- What is the name of the process?
- Write the reactions taking place at the electrodes ‘Y’ (anode) and ‘Z’ (cathode), respectively.
The compound that is not an ore of aluminum is ______.
