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Give reasons for the following: Blue col...

Give reasons for the following:
Blue colour of copper sulphate solution is destroyed when iron fillings are added to it.

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
  1. Discuss briefly the following: Ultraviolet B

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  2. Give reasons for the following: Gold and silver often occur in native ...

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  3. Give reasons for the following: Blue colour of copper sulphate solutio...

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  4. Give reasons for the following: Sodium metal is stored under kerosene ...

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  5. Give reasons for the following: Silver does not displace hydrogen from...

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  6. Write a short notes on: Calcination.

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  7. Write a short notes on: Thermite process.

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  8. Write a short notes on: Froth floatation process.

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  9. An ore on heating in air from sulphur dioxide. Name the process than c...

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  10. Distinguish between: alloy and amalgam

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  11. What is difference between minerals and ores?

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  12. Distinguish between roasting and calcination. Which of these two is us...

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  13. An alloy of yellw colour is made of two metals a and b.when alloy a w...

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  14. Give six characterstic differences between metals and non-metals.

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  15. Discuss the different methods of preparation and properties of dioxyge...

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  16. What is corrosion of metals? Name one metal which does not corrode and...

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  17. How will you show that rusting of iron metals takes place in oxygen an...

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

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  19. what happen when a piece of zinc is added to copper sulphate solution?

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  20. What would you observe when you put Some copper pieces into green ferr...

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