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Chemistry · PYQ NEET UG 2017

हिन्दी

Extraction of gold and silver involves leaching with \( \text{CN}^- \) ion. Silver is later recovered by

  1. distillation
  2. zone refining
  3. displacement with Zn
  4. liquation

Correct answer · Option 3

displacement with Zn

Explanation

Silver is displaced from its cyanide complex solution by adding a more electropositive metal, zinc powder.
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