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What is the colour change observed when ...

What is the colour change observed when `SO_2` is passed through acidified `K_2Cr_2O_7` solution?

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SHARAM PUBLICATION-GROUP 16 ELEMENTS (OXYGEN FAMILY)-EXERCISE
  1. Give one reaction in which SO2 behaves as a reducing agent.

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  2. What is the action of SO2 with H2S?

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  3. What is the colour change observed when SO2 is passed through acidifie...

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  4. What is the action of O3on Mercury ?

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  5. What do you mean by tailing of mercury ?

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  6. Give one reaction in which H2SO4acts as a dehydrating agent .

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  7. Arrange the hydrides of Gr 16 elements with increasing order of their ...

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  8. Which are the anhydrides of sulphurous acid and sulphuric acid ?

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  9. Write the allotropic forms of oxygen .

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  10. In which elements of oxygen family the +6 oxidation state is least sta...

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  11. What are the different oxidation states of oxygen ?

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  12. Arrange the hydrides of elements of oxygen family in the increasing o...

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  13. Which catalyst is used in the preparation of oxygen from potassium chl...

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  14. Between O2 and O3 which is paramagnetic ?

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  15. What is Oleum ? Write its formula.

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  16. What are the reactions involved for ozone layer depletion in the atmos...

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  17. Name the allotrope of oxygen, which is used as a disinfectant and a ge...

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  18. Which gas is librated when metallic copper reacts with Conc. H2SO4 ?

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  19. Which gas is librated when Zinc reacts with Conc. H2SO4 ?

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  20. Between SO2 and SO3 which one acts as the reducing agent ?

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