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How will you account for the following: ...

How will you account for the following:
Graphite is soft and is used as a solid lubricant.

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Due to layered structure
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ICSE-SOME P-BLOCK ELEMENTS -SHORT ANSWER TYPE QUESTIONS
  1. Explain why graphite is soft and can be used as a lubricant.

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

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

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

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

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

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

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

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

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

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

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

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

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

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  15. Why do boron halides form addition compounds with ammonia ?

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  16. With the help of a balanced chemical equation, show that B(OH)3 behave...

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  17. Write the resonance structures of CO(3)^(2-)" and "HCO(3)^(-).

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  18. What is dry ice and why is it called so ?

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  19. Write the names and electronic configuration of all the elements belon...

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  20. Why is the atomic radius of gallium smaller than that of aluminium?

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