Advertisements
Advertisements
प्रश्न
Name the constituents of Duralumin.
उत्तर
The constituents of Duralumin are aluminium (95%), copper (4%), magnesium (0.5%) and manganese (0.5%).
APPEARS IN
संबंधित प्रश्न
Explain with reason:
Carbon can reduce lead oxide but not aluminium oxide.
In order to obtain 1 tonne of aluminium, the following inputs are required: 4 tonnes 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 (III) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
- Name the process used for the purification of bauxite.
- Write the equation for the action of heat on aluminium hydroxide.
Give reason for the following:
Nitric acid can be stored in aluminium containers.
An aqueous solution of sodium chloride is not used for electrolytic reduction of sodium metal. Why?
For the substance listed below, explain its role in the extraction of aluminium: Graphite
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:
Cryolite
Write the equation for the reaction that occurs at the cathode during the extraction by aluminium by electrolysis.
Write the balanced chemical equation to show the concentration of ore in Baeyer’s process.
Aluminium hydroxide to alumina
The compound that is not an ore of aluminum is ______.
