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Give the uses of argon....

Give the uses of argon.

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(i) Mixed with 20.06% nitrogen and it is used in gas filled electric lamps.
(ii) It is also used in radio valves and tubes.
(iii) Argon prevents the oxidation of hot filament and prolongs the life in filament bulbs.
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SURA PUBLICATION-P-BLOCK ELEMENTS - II-EVALUATION (ANSWER THE FOLLOWING QUESTIONS )
  1. Write the reason for the anamolous behaviour of nitrogen .

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

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  3. Give the uses of argon.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. Complete the following reactions . KClO(3)overset(Delta)rarr

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  19. Complete the following reactions . Cu+H(2)SO(4) overset("Hot conc") ...

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  20. Complete the following reactions . Sb+Cl(2) rarr

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