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(a) Name two metals which resist corrosi...

(a) Name two metals which resist corrosion due to the formation of a thin, hard ad imperrvious layer of oxide on their surface.
(b) Name five methods of preventing rusting of iron.
(c) What are the constituents of stainless steel? What are the special properties of stainless steel.?

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(a) Aluminium and Zinc
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(i) What is corrosion of metals ? (ii) Name a metal which does not corrode. (iii) Give two methods to prevent corrosion of metals.

(a). Name two metals which are found in nature mainly in the free state (as metallic elements) (b) name two metals which are always found in combined state. (c) What iron compound is present in haematite ore? Also write its chemical formula.

A metal X which is resistant to corrosion is produced by the electrolysis of its molten oxide whereas another metal Y which is also resistant to corrosion is produced by the reduction of its oxide with carbon. Metal X can be used in powder form in thermite welding whereas metal Y is used in making cathodes of ordinary dry cells. (a). name the metals X and Y. (b) Which of the two metals is more reactive: X or Y? (c) Name one ore or metal X. also write its chemical formula. (d) name one ore of metal Y. also write its chemcial formula. (e) name one alloy of metal X and one alloy of metal Y.

(a) Name two metals which are found in free state in nature. (b) What chemical process is used for extracting a metal from its oxide ore? Name one metal which is extracted by this method. (c) Describe the extraction of zinc metal from its sulphide ore as well as its carbonate ore. Write equations of all the reactions involved.

LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
  1. What is meant by 'rusting' ? With labelled diagrams, describe an activ...

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

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

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

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

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

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

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

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

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

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

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

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

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

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  15. An ore of manganese metal is:

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

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

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

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  19. A common metal which is highly resistant to corrosion is :

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  20. An important ore of zinc metal is:

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