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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

Galena

B

Copper pyrite

C

Sphalerite

D

Argentite

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The correct Answer is:
D
Ag ,Au are obtained by complex formation
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DISHA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE -1: CONCEPT APPLICATOR
  1. Which of the following faction is of no significance for roasting sul...

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

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

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  4. Calcination is the process in which

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  5. Extraction of zinc from zinc blende is achieved by

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  6. In froth flotation process many chemicals (frother, collector, activat...

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  7. In the metallurgy of Zn the Zn dust obtained from roasting and reducti...

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  8. A sulphide ore is first converted into its oxide before reduction. Thi...

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  9. Carbon and CO gas are used to reduce which of the following pairs of m...

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  10. While extracting an element from its ore, the ore is grind and leached...

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  11. Consider the following statements - In the aluminothermite process,...

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  12. Which statement is correct?

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  13. Aluminium is prepared in large quantities by

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  14. The incorrect statement among the following is

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  15. Select the property which forms the basis of hydrometallurgical proces...

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

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  17. Which of the following pairs of metals uis purified by van arkel meth...

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

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  19. Aluminium is extracted from Alumina (Al(2)O3 ) by electrolysis of a mo...

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  20. Which ore of the following is a mineral of iron ?

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