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What are Metalloids ? Give examples ?...

What are Metalloids ? Give examples ?

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There are some meals which show some properties of a metals and non metals. Such elemetns are called metalloids.
Eg. Germanium, Silicon, Arsenic.
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CPC CAMBRIDGE PUBLICATION-METALS AND NON-METALS-ADDITIONAL QUESTIONS ( Answer the following)
  1. What is an ore ?

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  2. What are Metalloids ? Give examples ?

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  3. Are metals electropositive or electronegative? State reason also

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  4. Define galvanishing.

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  5. Define ionic compounds. Ionic compounds conduct electricity only in th...

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  6. Name five ways to prevent rusting .

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  7. What are noble metals?

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  8. State three reasons for the following facts: a. Sulphur is a non met...

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  9. What is cinnbar ? How is a metal extracted from cinnabar ? Explain bri...

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  10. Give two examples of ore of aluminium?

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  11. Why do potato - chips manufactures fill the packest of chips with nitr...

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  12. What is gangue and what is concentration?

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  13. a. Write electron dot diagram for chlorine (At No. 17) and Calcium (At...

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  14. Identify the nature of above compound and explain three physical prope...

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  15. Give reasons for the following : (i) School bells are made up of met...

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  16. Give reasons for the following : (i) School bells are made up of met...

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  17. What asre amphoteric oxides? Choose the amphoteric oxide from among th...

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  18. Differentiate between roasting and calcination. Explain the two with...

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  19. Name two metals than can be used to reduce metal oxides of metals.

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  20. State reasons for the following: Electric wires are covered with rub...

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