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In which of the following cases will a v...

In which of the following cases will a violet colouration be observed?

A

An alkaline solution of sodiumnitroprusside is treated with a solution of `Na_(2)S`

B

a solution of sodiumnitroprusside in aq.NaOH is treated with `Na_(2)SO_(3)`

C

a solution of cobalt nitrite treated with KCI.

D

a solution of `Mn(NO_(3))_(2)` is treated with sodium bismuthate (or) red lead in presence of conc. `HNO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A, D
`Mn(HO_(3))_(2)+6HNO_(3)+5NaBiO_(3) to Na_(4)[Fe(CN)_(5)NOS]` (violet colour)
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AAKASH SERIES-PRACTICAL CHEMISTRY-LEVEL -II (Lecture Sheet) (EXERCISE-I) (Single or more than one option correct)
  1. Which of the following will give brick red ppt. with Fehling's solutio...

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  2. Compound 'A' (C(10)H(12)O) evolves H(2) gas with Na metal. It reacts w...

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  3. The gas(es) which turn lime water milky is (are)

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  4. Which of the following sulphide(s) is (are) not decomposed with dil. H...

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  5. Which of the following do not give chromyl chloride test?

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  6. Which of the following radicals will be precipitated by passing H(2)S ...

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  7. KCN is used for separating

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  8. Which of the following cations do (does) not give borax bead test?

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  9. The substance(s) which undergo sublimation "is"//"are"

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  10. The evolution of red-brown gas on heating a salt with K(2)Cr(2)O(7) an...

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  11. On reaction with dil. H(2)SO(4) which of the following salts will give...

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  12. A white precipitate is obtained when

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  13. Which of the following mixtures, of ions in solution can be separated ...

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  14. Which of the following ions can be separated by using dil. HCI?

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  15. Which of the following ions can be separated by using NH(4)CI and NH(4...

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  16. The cation which gives a yellow precipitate with potassium chromate is

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  17. In which of the following cases will a violet colouration be observed?

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  18. A white sublimable solid, when boiled with a NaOH solution, give a col...

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  19. Which of the following salts are black in colour?

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  20. Which of the following cations precipitates as their chlorides?

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