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Why is helium used in diving apparatus?...

Why is helium used in diving apparatus?

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As He has low solubility in blood.
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AAKASH INSTITUTE ENGLISH-THE P-BLOCK ELEMENTS-Try yourself
  1. Complete the following reactions: (i) C(2) H(4) + O(2) to (ii)...

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  2. Why does O(3) act as a powerful oxidising agent?

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  3. How isO(3) estimated quantitatively?

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  4. What happens when sulphur dioxide is passed through an aqueous soluti...

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  5. Comment on the nature of two S–O bonds formed in SO(2) molecule. Are t...

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  6. How is the presence of SO(2) detected ?

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  7. Mention three areas in which H(2) SO(4) plays an important role.

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  8. Write the conditions to maximise the yield of H(2)SO(4) by Contac...

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  9. Why is K(a(2)) ltlt K(a(1)) for H(2) SO(4) 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. Give two examples to show the anomalous behaviour of fluorine.

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  13. Sea is the greatest source of some halogens. Comment.

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

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  15. Why is ICl more reactive than I(2)?

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  16. Draw structure and give hybridisation of IF(7).

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  17. Why is helium used in diving apparatus?

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  18. Balance the following equation: XeF(6) + H(2) O to XeO(2) F(2) + HF

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

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  20. List the uses of neon and argon gases.

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