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Why is Helium used in diving apparatus?...

Why is Helium used in diving apparatus?

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  • The d and f-block elements

    ASSAM ACADEMIC CENTRE|Exercise Example|180 Videos

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ASSAM ACADEMIC CENTRE-The p-Block Elements-Example
  1. Mention two uses of H2SO4.

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  2. What are the essential conditions (temperature, pressure and catalyst)...

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  3. Why is Helium used in diving apparatus?

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  4. Complete the following equation: XeF6 + H2O rarr.

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  5. Why does Nitrogen show catenation properties less than phosphorus?

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  6. Write the disproportionation reaction of H3PO3.

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  7. Why fluorine formes only one oxacid HOF?

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  8. Write two uses of ClO2.

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  9. Arrange the following in the order of property indicated within bracke...

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  10. Arrange the following in increasing order if acid strength: HCl, HI, H...

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  11. rrange the following in the order of property indicated within bracket...

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  12. Mention two uses of Neon.

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  13. Answer the following: Which reaction was used by Bartlett to prepare t...

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  14. Which halogen has the highest electron gain enthalpy and which halogen...

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  15. Which of the following is more covalent SbCl5 or SbCl3?

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  16. Sulphur is a solid while oxygen is a gas at room temperature why?

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  17. Why acidic character of HCIO4 higher than HCIO3?

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  18. Answer the following: KHF2 is known but KHCl2 is not known. Give reaso...

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  19. Write the chemical reaction to show that concentrated H2SO4 is an oxid...

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  20. Write one chemical reaction to show that conc. H2SO4 is a dehydrating ...

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