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Extraction of silver from Ag(2)S by the ...

Extraction of silver from `Ag_(2)S` by the use of sodium cyanide is example of

A

Roasting

B

Hydrometallurgy

C

Electrimetallurgy

D

Smelting

Text Solution

Verified by Experts

The correct Answer is:
B
`Ag_(2)S + 2NaCH hArr 2Na[Ag(CN)_(2)]+ Na_(2)S`.
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CENGAGE CHEMISTRY-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Single Correcttype)
  1. The rocks formed by the solidification of magma over the years are

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  2. The process in which metal oxide is reduced to metal by Al is called

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  3. Extraction of silver from Ag(2)S by the use of sodium cyanide is examp...

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  4. Which of the following metals can be extracted by smelting ?

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  5. The most abundant element in earth's crust is

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  6. Which of the following processes involve the roasting process ?

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  7. Alklali metals do not exist in free state in nature because these are

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  8. In the froth flotation process for benefication of ore, the ore partic...

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  9. Salt which is (are) least likely to find in minerals

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  10. Which of the following benefication processes is used for the mineral ...

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  11. In the aluminothermite process, aluminium is

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  12. Magnetic separation is used for increasing concentration of the follow...

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  13. Which of the following srtatement above the advantage of masting of su...

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  14. When the sample of copper with zinc impurityn is to be purified by ele...

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  15. During the process of electroytic refining of copper some metals prese...

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  16. On heating a mixture of Cu(2)O and Cu(2)S, we get :

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  17. Sulphide ore of metal are usually concentrated by froth flotation proc...

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  18. Heating of ore in presence of air to remove sulphure impurities is cal...

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  19. The method of zone relining of metal is based on the principle of AIFM...

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  20. Which of the following function is of no significance for roasting su...

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