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Mention the role of cryolite in the extr...

Mention the role of cryolite in the extraction of aluminium.

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(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 (II)Cryolite in the extraction of aluminium from pure alumina.

Mention the role of FSH

PRADEEP-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -ADDITIONAL QUESTIONS (SHORT ANSWER QUESTIONS)
  1. Write the chemical equations involved in the preparation of p...

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  2. Describe the pinciple controlling the preparation of pure alumin...

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  3. Mention the role of cryolite in the extraction of aluminium.

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  4. Silver ores and native gold have to be leached with metal cya...

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  5. Describe the role of the following : (i) NaCN in the extractio...

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  6. What is the main difference between ? (i) Cupellation and poling (...

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  7. Differentiate between roasting and calcination.

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  8. Explain the term calcination and roasting with suitable exampl...

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  9. Carbonate ores are usualy subjected to calcination while sulphi...

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  10. What is a flux ? Discuss its types and uses in metallurgical o...

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  11. Differentiate between the following : (i) Flux and slag (ii...

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  12. Draw the Ellingham diagram for the formation of carbon monoxi...

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  13. Is carbon a satisfactory reducing agent for all metal oxides ? G...

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  14. What chemcial princpicl is involved in choosing a reducing agent for g...

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  15. What is the chief ore of iron ? Write chemical reactions taking ...

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  16. Write down the reactions taking place in different zones in the blast ...

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  17. Describe how the following changes are brought about : (i) P...

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  18. Describle the principal controlling each of the following processe...

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  19. Explain the following steps with chemical equations in the extr...

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  20. Describe the role of the following : (i) Limestone in the m...

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