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What is the role of depressant in froth ...

What is the role of depressant in froth floatation process?

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Role of depressant : The role of depressant is to selectively prevent one of the sulphide ores from coming to the froth.
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Describe the following: (i) Role of depressant in forth floatation process. (ii) Role of silica in the metallurgy of copper. (iii) Role of cryolite in the metallurgy of aluminium.

U-LIKE SERIES-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-LONG ANSWER QUESTIONS-I
  1. Write the principle of the following : Chromatography.

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  2. Write the principle of the vapour phase refining.

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  3. What is the role of depressant in froth floatation process?

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  4. Write the name of reducing agent to obtain iron from Fe(2)O(3) at high...

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  5. Name the method of refining of metals such as Germanium.

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  6. In the extraction of Al, impure Al(2)O(3) is dissolved in conc. NaOH t...

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  7. What is the role of coke in the extraction of iron from its oxides?

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  8. Name the method of refining of nickel.

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  9. What is the role of cryolite in the extraction of aluminium?

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  10. What is the role of limestone in the extraction of iron from its oxide...

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  11. Write the role of I2 in the Arkel method of refining.

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  12. Write the role of Cryolite in the extraction of aluminium.

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  13. Write the role of Dilute NaCN in the extraction of silver.

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  14. Indicate the principle behind the method used for the refining of Nick...

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  15. What is the role of dilute NaCN in the extraction of gold?

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  16. What is 'copper matte'?

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  17. Indicate the principle behind the method used for the refining of zinc...

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  18. What is the role of silica in the extraction of copper?

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  19. Which form of the iron is the purest form of commercial iron?

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  20. Name the method of refining to obtain silicon of high purity.

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