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Which one of the methods given in column...

Which one of the methods given in column I is applied for the extraction fo each of the metals given in column II:

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Electrolytic reduction: Aluminium and sodium, reduction with carbon: Zinc, iron and Tin: reduction with aluminium: Manganese
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LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
  1. How is manganese extracted from manganese dioxide, MnO(2)?Explain with...

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  2. What is a thermite reaction? Explain with the help of an equation.stat...

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  3. Which one of the methods given in column I is applied for the extracti...

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  4. (a) Give reasonwhy copper is used to make hot water tanksbut steel (an...

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  5. (a) Why does aluminium not corrode right through ? (b) What is meant...

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  6. (a) Why is an iron grill painted frequently? (b). Explain why, throu...

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  7. (a) Name the method by which aluminium metal is extracted. (b) Give ...

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  8. (a). Name two metals which occur in nature in free state as well as in...

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  9. How doet the method used for extracting a metal from its ore depend on...

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  10. Explain by giving one example, how highly reactive metals (which are h...

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  11. Describe with one example, how moderately reactive metals (which are i...

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  12. (a) Define the terms (i) mineral (ii) ore and (iii) gangue. (b) What...

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  13. Explain how, a reduction reaction fo aluminium can be used for welding...

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  14. (a) What is corrosion? (b) Name any two metals which do not corrode ...

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  15. What is meant by 'rusting' ? With labelled diagrams, describe an activ...

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  16. (a). What is an alloy? How is an alloy made? (b) What elements are p...

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  17. (a) Name two metals which resist corrosion due to the formation of a t...

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  18. (a) name an alloy of copper. State its chemical composition and ay one...

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  19. (a) How does the painting of an iron object prevent its rusting? (b)...

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  20. What happens when (a) ZnCO(3) is heated in the absence of oxygen ? ...

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