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Give reasons for the following observati...

Give reasons for the following observations: sulphur exhibits greater tendency for catenation than selenium.

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ASSAM ACADEMIC CENTRE-The p-Block Elements-Example
  1. What is the basicity of orthophosphoric acid?

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  2. what is the oxidation state of phosphorus in orthophosphoric and phosp...

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  3. Why conc. H2SO4 is not used for drying of H2S gas?

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  4. What is Marshall's acid?

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  5. SF6 is used as a gaseous electrical isulator, explain.

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  6. Give reasons for the following observations: sulphur exhibits greater ...

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  7. Name the noble gas that forms majority of the known noble gas compound...

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  8. Give reasons for the following: Nitrogen exhibits +5 oxidation state. ...

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  9. What is antichlor? Name one such antichlor.

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  10. What happens when, concentrated H2SO4 is added to calcium fluoride.

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  11. What happens when copper turnings are added to dilute sulphuric acid?

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  12. Which halogen will produce O2 and O3 on passing through water?

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  13. What is "chloride of lime"?

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  14. Which halogen acid is strongest and which is the weakest acid?

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  15. Sea weeds are the source of which halogen?

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  16. Account for the following: Chlorine water loses its yellow colour on s...

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  17. What is the action of chlorine on slaked lime?

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  18. Dry chlorine cannot bleach. Why?

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  19. Explain the following observations: hydrogen fluoride has a much highe...

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  20. Fluorine exhibits only+1 oxidation state, whereas other halogens also ...

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