1. Tardigrade
  2. Question
  3. Chemistry
  4. Statement I: Leaching of gold with cyanide ion in absence of air / O 2 leads to cyano complex of Au ( III ). Statement II: Zinc is oxidized during the displacement reaction carried out for gold extraction. In the light of the above statements, choose the correct answer from the options given below.

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Q. Statement I : Leaching of gold with cyanide ion in absence of air $/ O _{2}$ leads to cyano complex of $Au $ ( III ).
Statement II : Zinc is oxidized during the displacement reaction carried out for gold extraction.
In the light of the above statements, choose the correct answer from the options given below.

JEE MainJEE Main 2022General Principles and Processes of Isolation of Elements

Solution:

Statement-1 : wrong, $Au ^{+}$is correct, not $Au ^{+3}$
Statement-2 : correct