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What is meant by the term pyrometallurgy...

What is meant by the term pyrometallurgy?

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The process of extracting the metal by heating the metal oxide with a suitable reducing agent is called pyrometallurgy.
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Answer the Following: (i) What si the role of cryolite in the metallurgy of aluminium? (ii) Differentiate between roasting and calcination. (iii) What is meant by the term 'chromatography'?

ICSE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) (VERY SHORT ANSWER QUESTIONS)
  1. The extraction of Au by leaching with NaCN involves both oxidation and...

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  2. Why is the froth flotation method selected for the concentration of su...

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  3. What is meant by the term pyrometallurgy?

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  4. At a site, low grade copper ores are available and zinc and iron scrap...

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  5. Why is electrolytic reduction preferred over chemical reduction for th...

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  6. Copper matte is charged into a silica lined converter in extraction of...

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  7. What is the role of collectors in froth floatation process ?

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  8. On what principle is chromatography based ?

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  9. What is the role of cryolite in the extraction of pure aluminium from ...

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  10. What is meant by the term native state?

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  11. When an element is found to occur in the native state?

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  12. What type of elements are found to occur in the combined state?

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  13. What is a mineral?

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  14. What is an ore?

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  15. Comment on the statement that all ores are minerals but all the minera...

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  16. What do you mean by gangue or matrix ?

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  17. What is the difference between a rock and a mineral ?

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  18. What type of ores can be concentrated by magnetic separation method ?

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  19. Define the term metallurgy.

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  20. Which metals are expected to occur in the native state?

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