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What is the hybrid state of carbon in et...

What is the hybrid state of carbon in ethyne, graphite and diamond ?

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ICSE-SOME P-BLOCK ELEMENTS -SHORT ANSWER TYPE QUESTIONS
  1. How does carbon occur in nature ?

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  2. Name three crystalline allotropes of carbon.

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  3. What is the hybrid state of carbon in ethyne, graphite and diamond ?

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  4. which of the following is not true about structure of diamond and grap...

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  5. Why is diamond resistant to most of the reagents ?

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  6. Graphite is anisotropic with respect to conduction of electric current...

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  7. Explain why graphite is soft and can be used as a lubricant.

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  8. Explain, why diamond is very hard but graphite is soft .

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  9. How will you account for the following: Graphite is soft and is used...

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  10. Write a short note on the amorphous forms of carbon.

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  11. What happens when carbon is treated with hot and conc. H2 SO4

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  12. Give a brief account of the reducing properties of carbon.

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  13. Why is carbon monoxide regarded as a treacherous poison ?

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  14. What happens when steam is passed over red hot coke .

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  15. What happens when sodium formate is heated with conc. H2 SO4

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  16. What happens when carbon monoxide is passed over nickel heated to 325-...

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  17. What happens when carbon dioxide is passed through lime water?

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  18. What is the role of CO2 in the synthesis of carbohydrates in plants?

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  19. Why are boron halides and diborane referred to as 'electron deficient ...

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  20. What happens when a borax solution is acidified ? Write a balanced equ...

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