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Give reason for the following: Iron is r...

Give reason for the following: Iron is rendered passive with fuming nitric acid.

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Give reasons for the following: Iron is rendered passive with fuming nitric acid.

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ICSE-METALLURGY-QUESTIONS FROM PREVIOUS ICSE BOARD PAPERS
  1. Write the constituents of electrolyte for the extraction of aluminium.

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  2. Which of the following metallic oxides cannot be reduced by normal red...

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  3. Give reason for the following: Iron is rendered passive with fuming ni...

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  4. Match the properties and uses of alloys in List 1 with the appropriate...

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  5. Name the following metals : A metal present in cryolite other than ...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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