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What do you understand by allotropy ? Na...

What do you understand by allotropy ? Name the allotropic forms of carbon.

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ICSE-SOME P-BLOCK ELEMENTS -ESSAY (LONG ANSWER) TYPE QUESTION
  1. How is borax prepared from boron minerals? Describe its important prop...

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  2. How would you prepare boric acid from borax and from colemanite? Discu...

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  3. What do you understand by allotropy ? Name the allotropic forms of ca...

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  4. Discuss the structures of diamond and graphite and explain the hardnes...

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  5. How does carbon occur in nature? Describe its important physical and c...

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  6. How is carbon monoxide prepared ? How does it react with metallic oxid...

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  7. How would you prepare carbon dioxide in the laboratory? Describe its a...

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  8. Write the structure of diborane and explain the nature of bonding in i...

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  9. Describe briefly how elemental boron can be prepared.

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  10. The shapes and hybridisation of BF(3) and BH(4)^(-) respectively are

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  11. Explain the difference in properties of diamond and graphite on the ba...

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  12. What are fullerenes and how are they prepared ?

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  13. Discuss the properties of group 13 elements with reference to ionisati...

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  14. Discuss the properties of group 13 elements with reference to oxidatio...

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  15. Discuss the properties of group 13 elements with reference to Lewis ac...

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  16. Discuss the properties of group 13 elements with reference to nature o...

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  17. What are boranes? How is diborane prepared from boron halides? Discuss...

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  18. Why does boron differ from other elements of its own group in several ...

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  19. Highlight the difference in the structures of boron trichloride and an...

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  20. What is inert-pair effect? Illustrate with an example.

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