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How does carbon dioxide function as a fi...

How does carbon dioxide function as a fire extinguisher ? Burning magnesium cannot be extinguished by carbon dioxide -why ?

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CHHAYA PUBLICATION-SOME p-BLOCK ELEMENTS-QUESTION-ANSWER ZONE FOR BOARD EXAMINATION ( SHORT ANSWER TYPE)
  1. Why do nitrogen and carbon monoxide show similarities in their physica...

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  2. Give reasons Graphite is used as lubricant.

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  3. Unlike diamond, graphite is a good conductor of electricity-explain.

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  4. Diamond is extremely hard but graphite is soft and slippery -explain w...

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  5. Diamond is a bad conductor of electricity but a very good conductor of...

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  6. In spite of being a covalent substance, the melting point of diamond i...

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  7. CO is an inflammable gas while CO2 is not-why?

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  8. How does carbon dioxide function as a fire extinguisher ? Burning magn...

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  9. Carbon monoxide possesses both oxidising and reducing properties - why...

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  10. How will you convert a mixture of CO and CO2 completely into CO2 ?

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  11. How will you convert a mixture of CO and CO2 completely into CO ?

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  12. [SiF6]^(2-) is known to exist whereas [CF6]^(2-) does not exist. Expla...

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  13. Aqueous solution of sodium hydroxide is added drop wise to solution of...

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  14. Difine buckyball. How is it made ?

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  15. CO is readily absorbed by ammoniacal cuprous chloride solution but CO2...

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  16. Why is orthoboric acid used in talcum powders?

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  17. Why , molten AlBr3 is a poor conductor of electricity?

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  18. What is the chemical composition of borax bead?

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  19. Which glass has the highest percentage of lead? Mention its use.

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  20. Silicon in elemental form does not form a graphite- like structure. Ex...

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