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At a site, low grade copper ores are ava...

At a site, low grade copper ores are available and zinc and iron scraps are also available. Which of the two scraps would be more suitable for reducing the leached copper ore and why?

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Zinc, since copper is less electropositive `(E^(Ɵ)=0.34 V)` than zinc `(E^(Ɵ) = -0.76 V)`. Hence, zinc can readily displace copper from its salt solutions.
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ICSE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) (VERY SHORT ANSWER QUESTIONS)
  1. Why is the froth flotation method selected for the concentration of su...

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  2. What is meant by the term pyrometallurgy?

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

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

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

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

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  7. On what principle is chromatography based ?

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

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  9. What is meant by the term native state?

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

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

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  12. What is a mineral?

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  13. What is an ore?

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

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  15. What do you mean by gangue or matrix ?

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

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

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  18. Define the term metallurgy.

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

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  20. List three main steps in the extraction of a metal from its ores.

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