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Write the role of Cryolite in the extr...

Write the role of
Cryolite in the extraction of aluminium.

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Cryolite lowers the m.p. of alumina to facilitate electrolysis.
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Write the role of (II)Cryolite in the extraction of aluminium from pure alumina.

(i) What is the role of cryolite in the extraction of aluminium ? (ii) What is the role of limestone in the extraction of iron from its oxides ?

(i) Name the method of refining of nickel (ii) What is the role of cryolite in the extraction of aluminium ? (iii) What is the role of limestone in the extraction of iron from its oxides ?

Write the role of : (i) NaCn in the extraction of gold from its ore. (ii) Cryolite in the extraction of aluminium from pure alumina. (iii) Co in the purification of Nickel.

U-LIKE SERIES-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-LONG ANSWER QUESTIONS-I
  1. What is the role of limestone in the extraction of iron from its oxide...

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

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

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

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

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

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  7. What is 'copper matte'?

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

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

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

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

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  12. What is the role of SiO(2) in the extration of copper?

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

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  14. Explain the principle and working of the method of electrolytic refini...

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  15. State the role of Depressant in froth floatation process.

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  16. State the role of Silica in the metallurgy of copper.

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  17. State the role of Graphite rod in the electrolytic reduction of alum...

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  18. Explain the role of each of the following in the extraction of metals ...

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  19. Explain the role of each of the following in the extraction of metals ...

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  20. Explain the role of each of the following in the extraction of metals ...

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