Bauxite, the ore of aluminium, is purified by which process?
- Hoope?s process
- Hall?s process
- Mond?s process
- Liquation process
The Correct Option is B
Solution and Explanation
(ii) Hoope's process or electrolytic refining is used to refine the obtained aluminium metal which is not $100 \%$ pure.
(iii) Mond's process is used to refine nickel.
(iv) Liquation process is used to refine a metal with low melting point like tin, bismuth, lead, mercurv etc.
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Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal