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प्रश्न
Answer the following question with respect by hydrogen : Identify the components of the electrolyte other than pure alumina and the role played by each.
उत्तर
Components of electrolyte: Cryolite and fluorspar
Role played by each electrolyte is given below:
- Cryolite lowers the fusion temperature from 2050°C to 950°C and enhances conductivity.
- Fluorspar andcryolite act as a solvent for the electrolytic mixture and increase conductivity.
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संबंधित प्रश्न
Complete the following by selecting the correct option from the choices given:
The metal whose oxide, which is amphoteric, is reduced to metal by carbon reduction ____________. (Fe/Mg/Pb/Al)
Give equation for the following conversion: Aluminium hydroxide to aluminium oxide.
Name oxide of one metal which is reduced by (give equation): Electrolytic reduction
Name oxide of one metal which is reduced by (give equation): Reduction with heat alone
Name a non-metallic element which forms acidic and neutral oxides
Name a non-metallic element which has a metallic lustre
What metallic property is shown by the non-metal graphite?
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.
(a) When bauxite is treated with sodium hydroxide solution, what happens to:
(i) the aluminium oxide?
(ii) The iron (III) oxide?
Complete the following by selecting the correct option from the choices given :
The diavalent metal whose oxide is reduced to metal by electrolysis of its fused salt is ________
Give the equation for the reduction of Zinc oxide.
