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Blue solution of CuSO4 on treatment with...

Blue solution of `CuSO_4` on treatment with excess KCN give colourless solution due to the

A

formation of CuCN

B

formation of `Cu(OH)_2`

C

formation of `[Cu(CN)_4]^(2-)`

D

`Cu^(2+)` is reduced by `CN^-` to `Cu^+` which forms the complex `[Cu(CN)_4]^(3-)` .

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
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  2. WhenI^(-) is oxidised by MnO4^(-) in alkaline medium, I^(-) converts ...

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  3. Blue solution of CuSO4 on treatment with excess KCN give colourless so...

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  4. Consider a titration of potassium dichromate solution with acidified M...

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  5. Among the following, The coloured compound is

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  6. The complex showing a spin only magnetic moment of 2.82 B.M. is

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  7. The colour of light absorbed by an aqueous solution of CuSO4 is

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  8. Which of the following pairs have almost similar atomic radii ?

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  9. Which of the following ions are colourless ?

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  10. Which of the following ions have same number of unpaired electrons ?

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  11. Which of the following statements is/are wrong ?

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  17. Which of the following statement(s) is (are) correct when. a mixture ...

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  18. The yellow solution (X) is

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  19. The yellow solution (X) is

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  20. Which of the following compounds will give a yellow precipitate with i...

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