During the process of electrolytic refining of copper, some metals present as impurity settle as anode mud. These are
- Fe and Ni
- Ag and Au
- Pb and Zn
- Se and Ag
The Correct Option is B
Solution and Explanation
Top Questions on General Principles and Processes of Isolation of Elements
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Statement II : During the Hall-Heroult electrolysis process, purified $Al _2 O _3$ is mixed with $Na _3 AlF _6$ to lower the melting point of the mixture
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D. ClO2; is used as a bleaching agent
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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