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The process (es) by which lighter earthy...

The process (es) by which lighter earthy particles are freed from the heavier particles using water is / are :

A

gravity separation method

B

Levigation

C

Hydraulic washing

D

Leaching

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The correct Answer is:
A, B, C
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VK JAISWAL ENGLISH-METALLURGY-One OR MORE ANSWERS IS/ ARE CORRECT
  1. Which of the following mineral does not contain sodium ?

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  2. Which of the following pair consists of ore of the same metal ?

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  3. The process (es) by which lighter earthy particles are freed from the ...

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  4. Roasting is carried out to :

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  5. The chemical treatment of the ore for concentration is done in the cas...

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  6. Froth floatation :

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  7. Which of the following reaction(s) occurs during calcination?

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  8. Amphoteric nature of aluminium is employed in which of the following p...

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  9. Which of the following is true for calcination of metal ore ?

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  10. The difference (s) between roasting and calcination is / are :

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  11. The etraction of metals from oxide ores involves

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  12. Metals which can be extracted by smelting process are :

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  13. Of the following reduction processes, correct processes are :

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  14. In the extraction of aluminium metal, one of the process is summarised...

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  15. During the production of iron and steel.

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  16. The smelting of iron in a blast furnace involves the following process...

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  17. For which of the following metals can be extracted by aluminothermic p...

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  18. For which of the following metal, the carbon reduction cannot be used ...

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  19. The advantage(s) of using carbon to reduce a number of oxides and othe...

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  20. The disadvantage of carbon reduction method are :

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