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Acidified K2Cr2O7 solution changes to wh...

Acidified `K_2Cr_2O_7` solution changes to when `SO_2` gas is passed through it.

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What happens when SO_2 gas is passed through acidified KMnO_4 solution ?

What happens when Cl_2 gas is passed through a solution of NaI?

What happens when SO_2 gas is passed through acidified K_2Cr_2O_7 solution ?

What happens when H_2S gas is passed through acidified KMnO_4 solution?

A mixture of three gases A, B, C is passed first through acidified K_2Cr_2O_7 solution when A is absorbed turning the K_2Cr_2O_7 solution green. B gas is absorbed in lime water turning it milky and 'C' gas is absorbed in terpentine oil. Identify A,B,C .

Acidified K_2Cr_2O_7 on oxidation by H_2O_2 gives:

If H_2S is passed through an acidified K_2Cr_2O_7 solution, the colour of the solution :

USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
  1. Why is OF6 not known?

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  2. What happens when hydrogen lodide solution is added to lead acetate so...

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  3. Acidified K2Cr2O7 solution changes to when SO2 gas is passed through i...

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  4. What happens when hydrochloric acid is added to silver nitrate solutio...

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  5. Why does only xenon from stable compounds among the noble gases?

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  6. What was the first noble gas compound and who prepared it?

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  7. Write four characteristic properties of noble gases.

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  8. Why is neon used in beacon light ?

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  9. Which noble gas is used along with O2 for respiration by sea divers ?

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  10. What happens when Nal is heated with conc. H2SO4 ?

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  11. Oxygen exists as O2 while sulphur exists as S8,although they belong to...

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  12. What happens when Cl2 gas is passed through dry slaked lime?

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  13. Why HF cannot be stored in glass bottle ?

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  14. Give one example of each in which SO2 acts as reductant and oxidant re...

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  15. Why is oxygen a gas sulphur a solid at while room temperature ?

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  16. Explain why CIF3 exists where as FCI3 does not.

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  17. What happens when Cl2 gas is passed through a solution of NaI?

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  18. What is aqua regia? What is its use ?

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  19. For dilution of H2SO4,H2O should not be added to conc. H2SO4. Give the...

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  20. Explain why bond angle in H2S is lower than in H2O ?

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