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The reddish brown vapours formed when so...

The reddish brown vapours formed when sodium chloride is heated with `K_2Cr_2O_7` and conc. `H_2SO_4` are due to the formation of ............... .

A

`Cl_2`

B

`CrO_2Cl_2`

C

`CrO_3`

D

`H_2CrO_3`

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. The bonds present in the structure of dichromate ion are

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  2. When H2O2 is shaken with an acidified solution of K2Cr2O7 in presence ...

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  3. The reddish brown vapours formed when sodium chloride is heated with K...

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  4. How would you account for the increasing oxidising power in the series...

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  5. An orange solid A on heating gives a colourless gas B. The gas B in dr...

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  6. In neutral or faintly alkaline medium, thiosulphate is quantitatively ...

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  7. Which of the following ions has the same number of unpaired electrons ...

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  8. Among the following actinoid pairs, the maximum oxidation states is sh...

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  9. The atomic number of cerium (Ce) is 58. The correct electronic configu...

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  10. The only radioactive element among the lanthanoids is

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  11. Identify a ‘Chemical twin' among the following

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  12. How many grams of potassium dichromate are required to oxidise 20.0 g ...

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  13. Which of the following statement regarding lanthanides is false?

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  14. How is sodium chromate converted into sodium dichromate, in the manufa...

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  15. Identify the metal that forms colourless compounds.

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  16. What is the general molecular formula of the products obtained on heat...

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  17. Choose the wrong statement in the following:

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  18. In aqueous solution, Cr^(2+) is stronger reducing agent than Fe^(2+). ...

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  19. Choose the correct matching of transition metal ion and magnetic momen...

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  20. The bivalent metal ion having maximum paramagnetic behaviour is

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