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Which one of the following is not a me...

Which one of the following is not a method of concentration of ore

A

gravity separation

B

froth flotation process

C

electromagnetic separation

D

smelting

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The correct Answer is:
D
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AAKASH SERIES-PRINCIPLES OF METALLURGY-OBJECTIVE EXERCISE-1
  1. Both calcination and roasting can be performed in

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  2. Copper pyrites ore is concentrated by

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  3. Which one of the following is not a method of concentration of ore

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  4. Most abundant element in the earth's crust by weight is

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  5. The rocky and silicious matter associated with an ore is called

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  6. The process of removing of lighter ganse particles by washing in a cur...

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  7. In the froth flotation process for the purification of minerals the pa...

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  8. Froth floatation process for the concentration of ores is an illustrat...

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  9. Gravity separation process may be used for the concentration of

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  10. Wolframite (FeWO(4)) is separated from cassiterite by

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  11. In the extraction of gold ,alluival sand is conectrated by whic...

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  12. Which one of the following is used as conditioner in froth flotation p...

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  13. During extraction of a metal the ore is roasted if it is a

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  14. A common metal that is used for the extraction of some metals from the...

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  15. Extraction of metals from sulphide cres is done by

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  16. To remove basic impurities from the ore the substance generally used i...

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  17. During smelting an additional substance added to form a fusible pro...

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  18. Calcination is the process of heating the ore :

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  19. To which of the following ores, calcination process in not applicable

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  20. Roasting is carried out in case of

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