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Define corrosion of metals?...

Define corrosion of metals?

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
  1. Explain why surface of some metals acquired a dull appearance when exp...

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  2. What would you observe when zinc is added to a solution of iron sulpha...

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  3. Define corrosion of metals?

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  4. Explain,why metals are good conductors of heat and electricity?

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  5. Explain the meaning of malleable and ductile

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  6. What is meant by a reactivity series of metals? Arrange the following ...

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  7. You are given an iron strip. How will you make it into a magnet?

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  8. What is difference between minerals and ores?

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  9. Define the terms 'metallurgy' and 'gangue'.

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  10. Explain, why carbon can reduce copper but not calcium oxide to calcium...

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  11. Write the importance of MOET.

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  12. Write chemical equations for the reactions taking place at the two ele...

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  13. Write any two differences between morula and blastula.

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  14. What happens when aluminium wire is heated in air? Give equation.

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  15. How is impure metal refined electrolytically?

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  16. Explain the meaning of malleable and ductile

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  17. Why do solids have a definite volume ?

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  18. Giving examples, differentiate between roasting and calcination.

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  19. Name two metals which will displace hydrogen from dilute acids, and tw...

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  20. T/F Carbonate and sulphide ores are usually converted into oxides.

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