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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

Argentite

B

Galena

C

Copper pyrite

D

Sphalerite

Text Solution

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The correct Answer is:
D
Galena (PbS), copper pyrite `(CuFeS_2)` and argentite `(Ag_2S)` are concentrated by froth floatation process but sphalerite (ZnS) is concentrated by chemical leaching .
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Exercise 2
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  2. Which of the following statement is incorrect ?

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

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  4. The fluorspar (CaF2) is added in small quantities in the electrolytic ...

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  5. In the equation: M+8CN^(-)+2H(2)O+O(2)to4[M(CN)(2)]^(-)+4OH^(-) meta...

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  6. Match the following . The correct answer is

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  7. Bell metal is an alloy of

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  8. Specific gravity of slag is

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  9. Match the following Columns and choose the correct option from the co...

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  10. For the reduction of FeO at the temperature corresponding to point D, ...

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  11. Which of the following statement(s) is/are incorrect ? I. Zinc can b...

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  12. Match Column I with Column II and select the correct answer using the ...

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  13. Consider the following reaction at 1000^(@)C (A) Zn (s) + (1)/(2) O...

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  14. In Mac Arthur Forest method, silver is extracted from the solution of ...

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  15. Which method of purification is represented by the following equations...

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  16. In aluminium extraction by Bayer process, alumina is extracted from ba...

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  17. Which of the following statement is incorrect?

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  18. Match the following Columns and choose the correct option from the cod...

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  19. Aluminothermic process is used for the extraction of metals, whose oxi...

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  20. Match the column I and column II and pick the correct matching from th...

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