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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 do the Gr-18 elements not form compounds under ordinary conditions...

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

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

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  4. What is the shape of ozone molecule ?

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  5. Name two poisonous gases which can be prepared from Cl2.

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  6. H2O is a liquid while hydrogen sulphide is a gas at room temperature....

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  7. Write all the members of halogen family.

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

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  9. Which noble gas is called as Hidden gas ?

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  10. Presence of Helium in earth was Ist proved by .

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  11. What is composition of Oleum ?

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  12. What is the role of MnO2 in the preparation of Cl2 from HCI?

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  13. Explain why the ionisation energy of nitrogen is more than that of oxy...

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  14. Write the equation for the reaction between CI2 and dil. NaOH solution...

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  15. Name the process employed for manufacture of NH3 from N2 and H2 .

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  16. Magnesium nitride on bolling with water forms .

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  17. Why is phosphoric acid syrupy in nature ?

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  18. Write the product formed when ammonia reacts with excess of chlorine.

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  19. Why is Iron passive with conc. NHO3 ?

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  20. What is the compound formed during brown ring test for nitrate.

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