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In the proces of extraction of gold, R...

In the proces of extraction of gold,
Roasted ore + `CN^(-) + H_(2)O overset(O_(2)) to [X] + OH^(-)`
`[X] + Zn to [Y] + Au`
[X] and [Y] respectively are:

A

`X=[Au(CN)_(2)]^(-), Y=[Zn(CN)_(4)]^(2-)`

B

`X=[Au(CN)_(4)]^(3-), Y = [Zn(CN)_(4)]^(2-)`

C

`X=[Au(CN)_(2)]^(-) , Y=[Zn(CN)_(6)]^(3-)`

D

`X=[Au(CN)_(4)]^(-), Y=[Zn(CN)_(4)]^(2-)`

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BRILLIANT PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -LEVEL - II
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  2. Which of the following statements is wrong?

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  3. Select the correct statement:

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  4. Which of the following statements about Ellingham diagram are true? ...

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  6. Which of the following statements is false?

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  9. In the extraction of zinc, during roasting the temperature is kept abo...

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  10. In thermite reduction Al is chosen as reducing agent because,

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  11. In thermite reduction, ignition mixture consists of

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  12. In hydrometallurgy, sometimes a flux is added,

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  13. In the proces of extraction of gold, Roasted ore + CN^(-) + H(2)O ov...

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  14. In the extraction of Al by Hall-Heroult's process, electrolyte contain...

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  18. Which of the following statement is false?

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  19. Lanthanoid metals can be separated by:

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  20. Which of the following is incorrectly matched:

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