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Which of the following metals is (are) obtained by leaching its (their) ore(s) with dilute cyanide solution?

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Question

Which of the following metals is (are) obtained by leaching its (their) ore(s) with dilute cyanide solution?

Options

  • Zinc

  • Aluminium

  • Silver

  • Gold

MCQ
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Solution

Silver, Gold

Explanation:

Silver and gold are obtained by leaching their ores with dilute cyanide solution in the presence of air (oxygen). This process forms a soluble metal cyanide complex from the metal.

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