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Give the uses of argon....

Give the uses of argon.

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Argon prevents the oxidation of hot filament and prolongs the life in filament bulbs.
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FULL MARKS-P - BLOCK ELEMENTS - II-TEXTBOOK EVALUATION (II. Answer the following questions:)
  1. Give the oxidation state of halogen in the following. (a) OF(2)" ...

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  2. What are interhalogen compounds ? Give examples .

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  3. Why fluorine is more reactive than other halogens?

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  4. Give the uses of helium .

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  5. What is the hybridisation of iodine in IF(7) ? Give its structure .

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  6. Give the balanced equation for the reaction between chlorine with cold...

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  7. How will you prepare chlorine in the laboratory ?

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  8. Give the uses of sulphuric acid.

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

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

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  11. Write the molecular formula and structural formula for the following m...

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  12. Give the uses of argon.

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

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

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

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

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  17. Suggest a reason why HF is a weak acid, wheres binary acids of the all...

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

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  19. What type of hybridisation occur in (a) BrF(5) (b) BrF(3)

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  20. Complete the following reactions. 1. NaCl+MnO(2)+H(2)SO(4)rarr 2. ...

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