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What is meant by 'rusting' ? With labell...

What is meant by 'rusting' ? With labelled diagrams, describe an activity to find out the conditions under which iron rusts.

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LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
  1. Explain how, a reduction reaction fo aluminium can be used for welding...

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

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

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

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

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

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

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

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  9. (a) For the reduction of a metal oxide, suggest a reducing agent other...

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  10. (a) Name the chemical compound which is electrolysed in molten state t...

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  11. (a). Name two metals which are found in nature mainly in the free stat...

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  12. (a) What is the difference betwee a mineral and an ore? (b) Which me...

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  13. (a) Name the metal which is extracted from haematite ore. (b) Name o...

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  14. (a) Which metal is extracted from bauxite ore ? (b) Give the name of...

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  15. (a) Name the metal which is extracted from the ore called 'rock salt' ...

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  16. (a) Which metal is extracted from calamine ore ? (b) Name one ore of...

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  17. An ore of manganese metal is:

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  18. Which of the following is not an ore of Iron ?

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  19. The metal which can be extracted from the bauxite ore is:

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  20. The two metals which can be extracted just by heating their sulphides ...

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