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Name the chief ores of Cu, Fe and Al. Wh...

Name the chief ores of `Cu, Fe and Al`. What are the methods employed for the concentration of their ores?

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The chief ore of Cu is copper pyrites `(CuFeS_(2))`, which is concentrated by froth floatation. The chief ore of Fe is haematite `(Fe_(2)O_(3))` and it is concentrated by magnetic separation. The chief ore of Al is bauxite `(Al_(2)O_(3).2H_(2)O)` and it is concentrated by leaching.
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CHHAYA PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-QUESTION - ANSWER ZONE FOR BOARD EXAMINATION (VERY SHORT ANSWER TYPE )
  1. If the impurities are lighter than the ore, mention the process of the...

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  2. Explain why the concentraction of the sulphide ore is usually carried ...

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  3. Name the chief ores of Cu, Fe and Al. What are the methods employed fo...

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  4. Metal sulphides occur mainly in rocks and metal halides in lakes and s...

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  5. Write the name of a suitable flux to remove SiO(2) present as gangue.

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  6. How are the elements occupying higher positions of the electrochemical...

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  7. Out of C and CO, which is a better reducing agent for FeO in the lower...

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  8. CO cannot be used for the reduction of ZnO- why?

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  9. How cany the feasibility of reduction of a metal oxide by a metal be p...

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  10. Name an alloy of Cu that is used for making utensils.

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  11. Name the gas used for the separation of Ni from impurities by Mond pro...

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  12. Explain why invar is used for making meter scale.

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  13. What is copper matte?

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  14. Name the anode used in electrolytic refining of Cu?

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  15. How can a small amount of Cd be removed from zinc?

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  16. Arrange in the order of increasing carbon content: wrough iron, cast i...

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  17. What is the principle of zone refining?

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  18. Limestone is used in the preparation of pig iron from haematite - why?

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  19. What is pyrometallurgy?

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  20. Is carbon a satisfactory reducing agent for all metal oxides ? Explain...

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