Q.
Which of the following diagram is correctly related to refining of gold?
1348
211
General Principles and Processes of Isolation of Elements
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Solution:
Gold obtained from extraction steps contains silver, copper zinc and sometimes lead as impurities.
Cupellation → Zinc and lead are oxidised and ore blown off.
Parting process → Removal of impurities of silver and copper
Miller’s process → To remove chlorine Electrolytic refining.