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प्रश्न
what is the function of cryolite in the extraction of aluminium, other than acting as a solvent for bauxite?
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उत्तर
Cryolite is used in the electrolysis of alumina. The function of cryolite is to
(i) Reduce melting point of alumina
(ii) Make molten alumina a good conductor of electricity.
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संबंधित प्रश्न
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Iron (ll) oxide
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Steel is an alloy of iron and ______.
Give the equation for the reduction of Zinc oxide.
The following sketch represents the electroplating of an Iron cup with Nickel metal.
Study the diagram and answer the following questions:
- During electroplating, the iron cup is placed at the cathode. Why?
- Name the ion that must be present in the electrolyte.
- State one condition that is necessary to ensure that the deposit is smooth, firm and even.
- Write the reaction taking place at the cathode.
- What change would you observe at the anode?
