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Sulphide ores of metals are usually conc...

Sulphide ores of metals are usually concentrated by both floatation process. Which of the following sulphide ores offers an exception and is concentrated by chemical leaching ?

A

Sphalerite

B

Argentite

C

Galena

D

Copper pyrite

Text Solution

Verified by Experts

The correct Answer is:
B
Argentite ` (Ag_2 S) ` being a low grad ore is preferably extracted by leaching with NaCN.
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PRADEEP-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -COMPETITION FOCUS (JEE(Main and Advanced)/MEDICAL ENTRANCE SPECIAL) MULTIPLE CHOICE QUESTIONS (I)
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  2. The complex formed when Al(2)O(3) is leached from bauxite using concen...

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  3. Sulphide ores of metals are usually concentrated by both floatation pr...

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  4. In the equatio, 4M + 8 CN^(-) + 2 H2O + O2 to 4 [M(CN)2]^(-) ...

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  5. In the cyanide extraction process of silver from argentite ore, the ox...

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  7. When limestone is heated CO(2) gas is liberated. In metallurgy, this p...

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  8. Which of the following faction is of no significance for roasting sul...

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  10. In view of the signs of Delta(r)G^(@) for the following reactions : ...

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  11. Delta G^(@) vs T plot in the Ellingham's diagram slopes downward fo...

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  12. According to Ellingham diagram the oxidation reaction of carbon and ca...

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  14. The following reaction take place in the blast in the proparation of i...

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  15. Identify the reaction that does not take place in a blast furnace

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  16. which of the following electronts is present as the impurity to the m...

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  17. When copper pyrites is roasted in excess of air, a mixture of CuO + Fe...

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  18. Roasted copper pyrite on smelting with sand produces

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  19. The composition of 'copper matte' is

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  20. Copper is extracted from copper pyrites by heating in a besseme...

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