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Suggests method for the quantitative est...

Suggests method for the quantitative estimation of ozone `(O_3)`.

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When `O_3` is treated with excess potassium iodide solution containing a borate buffer having pH = 9.2, iodine is liberated.`2l^(-)+H_2O+O_3to2OH^(-)+l_2+O_2` The iodine thus liberated is titrated against standard sodium thiosulphate solution. From the, titre value, the amount of `O_3` present can be estimated.
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A N EXCEL PUBLICATION-P-BLOCK ELEMENTS-QUESTION BANK
  1. Complete the following reactions? '4Al+3O2

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

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  3. Suggests method for the quantitative estimation of ozone (O3).

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  4. What happens when SO2 is passed through an aqueous solution of Fe (III...

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  5. Comment on the nature of two S-O bonds in SO2 molecule. Are the two S:...

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  6. How is the presence of SO2 detected?

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  7. Mention three areas in which H2SO4plays an important role.

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  8. Write the conditions to maximise the yield of H2SO4 in contact process...

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  9. Why is Ka2 less than Ka1 for H2SO4 in water.?

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  10. Considering the parameters such as bond dissociation enthalpy, electro...

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  11. Give two examples to show the anomalous behaviour of fluorine.

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  12. Sea is the greatest source of halogens. Comment.

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  13. Give the reason for the bleaching property of chlorine.

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  14. Name two poisonous gases that can be prepared from chlorine gas

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  15. Why is ICl more reactive than I2 ?

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  16. Why is helium used in diving apparatus?

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  17. Why has it been difficult to study the chemistry of radon?

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  18. Elements in the groups 13 to .18 in the periodic table constitute the ...

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  19. Elements in the groups 13 to .18 in the periodic table constitute the ...

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  20. Elements in the groups 13 to .18 in the' periodic table constitute the...

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