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प्रश्न
Extraction of gold and silver involves leaching with CN− ion. Silver is later recovered by ______.
विकल्प
Liquation
Distillation
Zone refining
Displacement with Zn
MCQ
रिक्त स्थान भरें
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उत्तर
Extraction of gold and silver involves leaching with CN− ion. Silver is later recovered by displacement with Zn.
Explanation:
Extraction of gold and silver involves leaching with the cyanide ion (CN−). In this process, silver is later recovered by displacement with zinc (Zn). Zinc displaces silver from its complex, allowing silver to be recovered. This method is well known in the cyanide process for silver extraction. Thus, silver is recovered by displacement with Zn after leaching with cyanide ion.
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