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Which of the following statements is not...

Which of the following statements is not true?

A

On passing `H_2S` through acidified `K_2Cr_2O_7` solution, a milky colour is observed.

B

`Na_2Cr_2O_7` is preferred over `K_2Cr_2O_7` in volumetric analysis.

C

`K_2Cr_2O_7` solution in acidic medium is orange.

D

`K_2Cr_2O_7` solution becomes yellow on increasing the pH beyond 7.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Acidified K2Cr2O7 solution turns green when Na-2SO3, is added to it. T...

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  2. Draw lewis structure of H2S

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  3. Which of the following statements is not true?

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  4. Which of the following does not give oxygen on heating ?

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  5. Which of the following lanthanoid ions is diamagnetic ? (At. nos. Ce...

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  6. Reason of lanthanoid contraction is :

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  7. The reaction of acidified KMnO4 with H2O2 gives .

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  8. The pair of compounds that cannot exist together is :

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  9. Magnetic moment of 5.92 B.M. is given by which of the following ion ...

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  10. Gadolinium belong to 4 f series (Z=64). Which of the following is its ...

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  11. Because of lanthanoid contraction, which of the following pairs of ele...

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  12. Which one of the following statement is correct when SO2 is passed thr...

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  13. The outer shell electronic configuration of Gd (Z = 64) is

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  14. Draw lewis dot structure of PH3

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  15. The correct order of ionic radii of Y^(3+), La^(3+), Eu^(3+) and Lu^(3...

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  16. Write ionic equation showing KMnO4 acting as an oxidising agent in aci...

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  17. Which of the following pairs of transition metal ion s are the stronge...

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  18. What is the maximum oxidation state shown by Manganese in its compound...

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  19. Write the coordination number of central atom in the following coordin...

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  20. The acidic, basic or amphoteric nature of Mn2O7, V2O5 and CrO are resp...

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