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Which of the following compounds is form...

Which of the following compounds is formed when a mixture of `K_(2)Cr_(2) O_(7) and KCl` is heated with conc. `H_(2)SO_(4)` ?

A

`CrO_(2)Cl_(2)`

B

`CeCL_(3)`

C

`CrOCl_(2)`

D

`CrO_(2)Cl_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Red vapours of `CrO _(2) Cl_(2)` are obtained.
`K_(2) Cr_(2) O_(7)+ 2H_(2)SO_(4)to KHSO_(4) +2CrO_(3) +H_(2)O`
`KCl+H_(2) SO_(4) to KHSO_(4) +HCl`
`{:(CrO_(3)+ 2HCl to " "CrO_(2)Cl_(2) " "+H_(2)O), (" ""Chromyl chloride"),(" "("Red oily vapours")):}`
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NIKITA PUBLICATION-D-AND F-BLOCK ELEMENTS-MULTIPLE CHOICE QUESTIONS
  1. Pick out incorrect statemment about K(2) Cr(2)O(7).

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  2. The addition of acidic K(2)Cr(2) O(7) to NaCl produces a colour

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  3. Which of the following compounds is formed when a mixture of K(2)Cr(2)...

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  4. Formula of chromyl chloride is-

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  5. Pick out the incorrect statement.

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  6. MnO(4)^(-) ions can be reduced in strongly alkaline medium to give

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  7. On adding KMnO(4) to cold conc. H(2)SO(4), it gives

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  8. In acidic medium oxidation state of Mn changes from

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  9. The equivalent weights of KMnO(4) as an oxidising agent in acidic and ...

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  10. When KMnO(4) solution is added to hot oxalic acid solution the decolo...

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  11. Equivalent weight of KMnO(4) when it is convert into MnSO(4) is

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  12. Acidified KMnO(4) solution is decolourized by

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  13. For the redox reaction, MnO(4)^(-) + C(2)O(4)^(2-) + H^(+) rarr Mn^(...

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  14. Potassium manganite (K(2)MnO (3)) is formed when

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  15. Which of the following statements is not true ?

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  16. Baeyer's reagent is:

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  17. Following ions are equilibrium at Cr(2) O(7)^(2-) hArr CrO(4)^(2-)

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  18. The mineral from which potassium permagnate is manufactured

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  19. MnO(4)^(2-) is

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  20. The reaction, MnO(4)^(2-) +e^(-)hArr MnO(4)^(-) is shifted to right in

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