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In the froth flotation process for the p...

In the froth flotation process for the purification of minerals the particles float because

A

they are light

B

they are insoluble

C

their surface is preferentially wetted by oil

D

they bear an electrostatic charge

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The correct Answer is:
C
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AAKASH SERIES-PRINCIPLES OF METALLURGY-OBJECTIVE EXERCISE-1
  1. The rocky and silicious matter associated with an ore is called

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

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

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

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

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  6. Wolframite (FeWo4) is separated from cassiterite by

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

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  8. Which one of the following is used as conditioner in froth floa...

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

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

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  11. Extraction of metals from sulphide cres is done by

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

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

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  14. Calcination is the process of heating the ore :

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

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  16. Roasting is carried out in case of

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  17. Smelting is usually carried out in

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  18. Slag is a product of

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  19. In oxidisin roasting of Zn, S porducts are

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  20. Ag(2)S or in mixed with NaCl and heated to 6000^(@) in the presence o...

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