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Extraction of gold and silver involves leaching the metal with CN–ion. The metal is recovered by ________________.
Extraction of gold and silver involves leaching the metal with CN–ion. The metal is recovered by ________________.
CBSE | Chemistry | Class 12 | Exercise 1 | General Principles and Processes of Isolation of Elements | NCERT Exemplar
Extraction of gold and silver involves leaching the metal with CN–ion. The metal is recovered by ________________.

(i) displacement of metal by some other metal from the complex ion.

(ii) roasting of the metal complex.

(iii) calcination followed by roasting.

(iv) thermal decomposition of the metal complex.

 

Correct Answer: (i) displacement of metal by some other metal from the complex ion

Explanation: Extraction of gold and silver involves leaching the metal with CN–ion. The metal is recovered by the displacement of metal by some other metal from the complex ion.

i

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