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What is the role of cryolite in the metallurgy of aluminium ?

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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. Explain Mond’s process used for refining of nickel.

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  2. Explain the magnetic separation of Tinston ore?

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  3. What is the role of cryolite in the metallurgy of aluminium ?

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  4. What is the Commercial name of mercuric sulphide?

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  5. Giving examples, differentiate between roasting and calcination.

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  6. How is Cast iron different from Pig iron ?

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  7. What is magnetic separation method for concentration of ore?

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  8. The chemical name for Vermilian is

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  9. Fill in the blanks with appropriate answer- Mercuric sulphide is also ...

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  10. Describe the role of the following in the processes mentioned: Iodine ...

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  11. State whether the statement is true or false- Vermilian is another nam...

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  12. State whether the statement is true or false- Vegetables are animal pr...

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  13. Give an example of zone refining of metals.

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  14. What is the role of cryolite in the metallurgy of aluminium ?

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  15. State whether the statement is true or false- Photosynthesis process i...

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  16. State whether the statement is true or false- Artificial gold is an al...

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  17. What are calcination and roasting ? In which type of ores are these pr...

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  18. Which metals are generally extracted by electrolytic process? Which po...

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  19. What types of metals are likely to exist in native state in nature ? G...

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

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