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(a) What is corrosion? (b) Name any tw...

(a) What is corrosion?
(b) Name any two metals which do not corrode easily.
(c) What is the corrosion of iron known as?
(d) Explain why aluminium is a highly reactive metal, still it is used to make utensils for cooking.

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(b) gold and platinum
(c) Rusting
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LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
  1. (a) Define the terms (i) mineral (ii) ore and (iii) gangue. (b) What...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. An ore of manganese metal is:

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

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

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