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Give a reason to support that sulphuric ...

Give a reason to support that sulphuric acid is a dehydrating agent.

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Concentrated sulphuric acid is used as a drying and dehydrating agent because it has a strong affinity for water and thus it absorbs water quickly. It being a hygroscopic substance absorb water from other substances without dissolving in it, so it is considered as a good dessicating or drying agent.
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Give the uses of sulphuric acid .

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SURA PUBLICATION-P-BLOCK ELEMENTS - II-EVALUATION (ANSWER THE FOLLOWING QUESTIONS )
  1. How will you prepare chlorine in the laboratory ?

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  2. Give the uses of sulphuric acid .

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  3. Give a reason to support that sulphuric acid is a dehydrating agent.

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  4. Write the reason for the anamolous behaviour of nitrogen .

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  5. Write the molecular formula and structural formula for the following ...

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  6. Give the uses of argon.

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  7. Write the valence shell electronic configuration of group-15 elements.

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  8. Give the equations to illustrate the chemical behaviour of phosphine .

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  9. Give a reaction between nitric acid and a basic oxide.

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  10. What happens when PCl(5) is heated ?

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  11. Why is boric acid considered as a weak acid ?

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  12. Deduce the oxidation number of oxygen in hypofluorous acid - HOF.

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  13. Hybridisation and shape of BrF(5) is :

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  14. Complete the following reactions . NaCl+MnO(2)+H(2)SO(4) rarr

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  15. Complete the following reactions . NaNO(2)+HCl rarr

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  16. Complete the following reactions . IO(3)^(-)+I^(-)+H^(+) rarr

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  17. Complete the following reactions . I(2)+S(2)O(3)^(2-)rarr

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  18. Complete the following reactions . P(4)+NaOH+H(2)O rarr

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  19. Complete the following reactions . AgNO(3)+PH(3) rarr

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  20. Complete the following reactions . Mg+HNO(3) rarr

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