Q33 / 180 · KCET 2017 · Chemistry

The metal extracted by leaching with a cyanide is

  • A
    \( \mathrm{Al} \)
  • Correct answer
    B
    \( \mathrm{Ag} \)
  • C
    \( \mathrm{Cu} \)
  • D
    Na

Solution

The metal extracted by leaching with a cyanide is Ag. Ores of silica and gold are leached and react with NaCN and air to
convert into \( \mathrm{AgCN} \) which on replacement by zinc give pure metal.

Hence, the correct answer is option: 'B'.

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