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What type of impurities are removed by c...

What type of impurities are removed by calcination ? How ?

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CHHAYA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE (SHORT ANSWER-TYPE QUESTIONS)
  1. What are the basic requirements of vapour phase refining?

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  2. Give a flow diagram for Mac Arthur Forrest process for the separation ...

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  3. What type of impurities are removed by calcination ? How ?

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  4. Name two metals which can be extracted by self-reduction. How does the...

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  5. Write the principle of basic oxygen process (BOP) in preparing steel.

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  6. What is froth-floatation? Write its principle.

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  7. What is leaching? Explain with an example.

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  8. What do you mean by concentration or beneficiation of ores?

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  9. Comment on the occurrence of metals like Na, Fe and Au in nature.

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  10. What type of ore is usually concentrated by electromagnetic separation...

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  11. Mention the methods briefly used in the beneficiation of the following...

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  12. Mention the methods briefly used in the beneficiation of the following...

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  13. Mention the methods briefly used in the beneficiation of the following...

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  14. Mention the methods briefly used in the beneficiation of the following...

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  15. What is flux? How is it chosen in metallurgy?

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  16. Is carbon a suitable reducing agent for all metal oxides? Give reason.

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  17. Differentiate between hydrometallurgy and electrometallurgy with suita...

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  18. Is it possible to extract aluminium by electrolytic reduction of Al(2)...

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  19. Is it possible to extract Al by the electrolysis of an aqueous solutio...

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  20. Copper is obtained by roasting its sulphide ore - explain.

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