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How is manganese extracted from manganes...

How is manganese extracted from manganese dioxide, `MnO_(2)`?Explain with the help of an equation.

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LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
  1. Name one metal each which is extracted by: (a). Reduction with carbo...

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  2. Fill in the following blanks with suitable words: ltbr. (a). The corro...

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  3. How is manganese extracted from manganese dioxide, MnO(2)?Explain with...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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