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From sodium argento cyanide Nal A CN, si...

From sodium argento cyanide Nal A CN, silver is proe pitated by adding a powder of

A

Gold

B

Zinc

C

Mercury

D

Gold or Mercury

Text Solution

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The correct Answer is:
B
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From sodium Argentocyanide Na[Ag(CN)_2] . Silver is precipitated by adding of

To precipitate silver from sodium argento-cyanide, aluminium can be used . Comment.

Silver metal is extracted from Ag_(2) S by cyanide process. The one is concentrated through froth floation process. The concentrated ore is the leached and solution is r ed with reducing agents to get spongy silver which then purified by fusion with an oxidant followed by electrolysis. Ag is precipitated from an aqueous solution of sodium argentocynide by adding

Silver metal is extracted from Ag_(2) S by cyanide process. The one is concentrated through froth floation process. The concentrated ore is the leached and solution is r ed with reducing agents to get spongy silver which then purified by fusion with an oxidant followed by electrolysis. Which of the following statements about electrolytic refining of silver is not true

Silver metal is extracted from Ag_(2) S by cyanide process. The one is concentrated through froth floation process. The concentrated ore is the leached and solution is r ed with reducing agents to get spongy silver which then purified by fusion with an oxidant followed by electrolysis. Leaching of Ag_(2)S is carried out by heating it with a dilute solution of

In the extraction of silver from argentite are the one is treated with dilute solution of NaCN in water in the presence of Y, whereby the following reaction takes place. Ag_(2)X+4NaCN+2Y to 2Na[Ag(CN)_(2)]+Na_(2)XO_(4)X and Y in this reaction are repesented by

The oxidising and reducing agents respectively for the cyanide extraction of silver from argentite ore are

AAKASH SERIES-METALLURGY-EXERCISE - 7.2
  1. From sodium argento cyanide Nal A CN, silver is proe pitated by adding...

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  2. Metal sulphides occur mainly in rocks, but metal halides occur in lake...

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  3. Roasting of the sulphide ore is partially done in the metallurgical op...

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  4. Egg shells on treating with dilute mineral acids give brisk effervence...

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  5. What criterion is followed for the selection of the stationary phase i...

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  6. Which metals are extracted by auto-reduction process?

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  7. Why copper pyrites roasted partially during the extraction of copper?

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  8. Ag and Cu are below hydrogen in activity series, yet they are found in...

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  9. CO is more effective reducing agent than coke below 983 K, but above 9...

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  10. How the following metals are refined: (a) Copper with cuprous oxide ...

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  11. When heamatite is burnt in air with coke and lime at 2000^(@)C, steel ...

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  12. Why is the extraction of copper form pyries more difficult then that f...

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  13. How is leaching carried out in the case of low grade copper ores?

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  14. Hydrogen is a common reductant of organic chemicals, but it is not ...

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  15. Copper can be extracted by hydrometallurgy but not Zinc -explain.

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  16. Alkali metals are

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  17. Is it true that under certain conditions, Mg can reduce SiO2 and Si c...

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  18. Name the metal M, which is extracted based on the following equation ...

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  19. In the extraction of Fe, what is the advantage of difference in temper...

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  20. Metal oxide is easily reduced if the metal is in molten state at the t...

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  21. What are the compositions of gem stones, ruby and sapphire?

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