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Isolation of Elements question

2019 · Shift 2 · Q7
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Isolation of Elements question

2019 · Shift 2 · Q7

JEE AdvancedChemistryIsolation of ElementsMultiple correct+4 / −1
The cyanide process of gold extraction involves leaching out gold from its ore with CN −-− in the presence of Q in water to form R. Subsequently, R is treated with T to obtain Au and Z. Choose the correct option(s).
  1. A
    Q is O2O_2O2​
  2. B
    Z is [Zn(CN)4{}_44​]2−{}^{2-}2−
  3. C
    T is Zn
  4. D
    R is [Au(CN)4{}_44​]−{}^-−
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