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What is meant by "brittleness"? Which ty...

What is meant by "brittleness"? Which type of elements usually show brittleness: metals or non-metals ?

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Non-metals
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LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
  1. Name the non-metal which is used: (a). To convert vegetable oil into...

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  2. Name one property which is characteristic of (a) metals, and (b) non-m...

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  3. What is meant by "brittleness"? Which type of elements usually show br...

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  4. What will happen if a strip of zinc is immersed in a solution of coppe...

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  5. What will happen if a strip of copper is kept immersed in a solution f...

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  6. What happens when iron nails are put into copper sulphate solution?

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  7. How would you show that silver is chemically less reactive than copper...

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  8. Give reasons for the following: Blue colour of copper sulphate solut...

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  9. Name a non-metal having a very high melting point.

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  10. Which property of graphite is utilised in making electrondes?

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  11. Name two non-metals which are both brittle and non-ductile.

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  12. Explain why, the surface of some metals acquires a dull appearance whe...

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  13. Complete and balance the following equations: (a). Na+O(2)to (b). ...

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  14. Fill in the following blanks with suitable words: (a). Magnesium lib...

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  15. (a). What is meant by saying that the metals are malleable and ductile...

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  16. Name two metals which react vilently with cold water. Write any three ...

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  17. (a). With the help of examples, describe how metals oxides differ from...

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  18. (a). What are amphoteric oxides ? Give two examples of amphoteric oxid...

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  19. (a). What is the neture of the oxide SO(2)? What happens when it is di...

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  20. (a). What is the nature of the oxide SO(2)? What happens when it is di...

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