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The following questions are relevant to the extraction of Aluminium:
State the reason for addition of caustic alkali to bauxite ore during purification of bauxite.

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ICSE-METALLURGY-QUESTIONS FROM PREVIOUS ICSE BOARD PAPERS
  1. Name the following metals : A metal present in cryolite other than ...

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  2. Name the following metals : A metal which is unaffected by dilute o...

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  3. The following questions are relevant to the extraction of Aluminium: ...

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  4. The following questions are relevant to the extraction of Aluminium: ...

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  5. The following questions are relevant to the extraction of Aluminium: ...

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  6. Identify the gas evolved in the following reaction when : a few crysta...

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  7. The metals zinc and tin are present in the alloy :

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  8. State two relevant observations for each of the following: Lead nitrat...

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  9. Using the information above, complete the following: .......... is ...

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  10. Using the information above, complete the following: Metal atoms te...

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  11. Using the information above, complete the following: Non-metallic ...

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  12. Using the information above, complete the following: Non-metallic e...

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  13. Using the information above, complete the following: Metals tend to...

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  14. The following questions relate to the extraction of aluminium by elect...

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  15. The following questions relate to the extraction of aluminium by elect...

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  16. The following questions relate to the extraction of aluminium by elect...

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  17. The main ore used for the extraction of iron is: (a)Haematite (b)Ca...

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  18. Heating an ore in a limited supply of air or in the absence of air at ...

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  19. Aluminium powder is used in thermite welding because :

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  20. State the main components of the following alloys: Brass

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