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Thermodynamically the most stable form o...

Thermodynamically the most stable form of carbon is
(a) diamond , (b) graphite
(c) fullerenes , (d) coal

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ICSE-SOME P-BLOCK ELEMENTS -VERY SHORT ANSWER TYPE QUESTIONS
  1. For what purpose are the black diamonds used ?

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  2. What is the composition of the compound formed by the reaction of carb...

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  3. Thermodynamically the most stable form of carbon is (a) diamond , (b...

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  4. What is carborundum ?

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  5. Which gases are evolved when carbon is treated with conc. HNO3 ?

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  6. Explain the reducing action of carbon mono oxide.

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  7. Which gas is evolved when formic acid is heated with conc. H2 SO4 ?

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  8. Which compound of carbon is a treacherous poison ?

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  9. Can magnesium burn in an atmosphere of CO2 ?

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  10. What is the nature of an aqueous solution of CO2?

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  11. Which gas is obtained when CO2 is passed over red hot coke ?

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  12. Give the color and odour of commercial sample of carbon disulphide.

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  13. Which has a larger atomic radius : Al or Ga?

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  14. Arrange the elements of group 13 in the increasing order of electropos...

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  15. How does the stability of +1 and +3 oxidation states vary in group 13?

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  16. Does boron form ionic compounds ?

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  17. What is the common name of hydrides of boron?

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  18. Name the bonding which links the two boron atoms in a diborane molecul...

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  19. What is the molecular formula of aluminium chloride ?

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  20. Write the general valence shell electronic configuration of group 13 e...

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