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Write two important process which are us...

Write two important process which are used in removing unwanted materials from the ore.

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R G PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. Name the most abundant metal. Name the principal ore of this metal.

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  2. Write formula of Malachite and Kaolinite.

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  3. Write two important process which are used in removing unwanted materi...

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  4. Give one example each from non-wettable substance and froth stabilise...

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  5. What is the function of NaCN in froth flotation process?

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  6. What is the significance of leaching in the extraction of aluminium?

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  7. What happens when dolomite is calcined?

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  8. What is copper matte?

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  9. Why is the extraction of copper from pyrites more difficult than that ...

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  10. Out of C and CO, which is a better reducing agent at 673 K?

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  11. What is an Ellingham diagram?

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  12. What is the function of limestone in the extraction of iron?

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  13. Though scrap zinc is more reactive than scrap iron,iron is preferred f...

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  14. Write the reaction when silver is leached with KCN.

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  15. Write the principle of liquation?

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  16. Which process of refining is usefull to get ultrapure semiconductor el...

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  17. What is eluent?

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  18. Write the composition of German Silver.

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  19. Which is the purest form of commercial iron?

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  20. Describe the role of SiO2 in the extraction of Copper from Copper matt...

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