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Give two uses of nitrogen....

Give two uses of nitrogen.

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(i) Nitrogen is used for the manufacture of ammonia, nitric acid and calcium Cyanamide etc.
(ii) Liquid nitrogen is used for producing low temperature required in cryosurgery and so in biological preservation.
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SURA PUBLICATION-P-BLOCK ELEMENTS - II-ADDITIONAL QUESTIONS AND ANSWERS (VERY SHORT ANSWER )
  1. How is nitrogen prepared from liquid air ?

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  2. Give two uses of nitrogen.

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  3. How is ammonia prepared in the lab?

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  4. Give two uses of nitric acid.

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  5. What is phosphoresence ?

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  6. What is the reaction of Phosphorous with alkali ?

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  7. Discuss the oxidising power of fluorine.

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  8. Elements of group 16 show lower value of first ionization enthalpy com...

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  9. Although Delta H of fluorine is less negative than that of chlorine,...

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  10. (i) Give correct order of boiling point of hydride of group 17. (ii)...

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  11. How would you account for the following ? The electron gain enthalpy...

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  12. There is a huge difference between the melting and boiling points of o...

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  13. Why does ozone act as a powerful oxidising agent ?

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  14. How is SO(2) an air pollutant ?

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  15. Acidic character increases from HF to HI. State whether the above stat...

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  16. Give the reason for bleaching action of Cl(2).

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  17. Give reason for the following : F(2) is more reaction than ClF(2) b...

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  18. Arrange the following as indicated below : F(2), Cl(2), Br(2), I(2) ...

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  19. Arrange the following as indicated below : HF, HCl , HBr, HI - inc...

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  20. Account for the following : O - O bond lengths in ozone molecule are...

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