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Which one of the following ores is the b...

Which one of the following ores is the best concentrated by froth floatation method?

A

Magnetite

B

Siderite

C

Galena

D

Malachite

Text Solution

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The correct Answer is:
C
Galena
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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-COMPETION FILE (Objective Questions) (Multiple Choice Question from competitive examinations)
  1. Roasted copper pyrite on smelting with sand produces

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  2. In the correct of the Hall-Heroult process for the extraction of Al, w...

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  3. Which one of the following ores is the best concentrated by froth floa...

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  4. What is the composition of 'Copper matte'?

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  5. The complex formed when Al(2)O(3) is leached from bauxite using concen...

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  6. The metal extracted by leaching with cyanide is

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  7. Purification of aluminium is called

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  8. Electrolytic refining's is ued to purify which of the following metals...

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  9. the common impurities present in bauxite are

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  10. Carnallite is an ore of

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  11. Which of the following is not a mineral of iron?

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  12. The one that is not a carbonate ore is:

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  13. Match the refining methods (Column I) with metals (Column II).

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  14. The correct statement is :

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  15. The pair that does NOT require calcination is :

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  16. The reaction that does NOT define calcination is :

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  17. Match the ores (Column A) with the metals (Column B) :

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  18. in the Hall -Heroult process, aluminium is formed at the athode , ...

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  19. The correct statement is

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  20. Assertion : For the extraction of iron, haematite are is used. Reaso...

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