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A chocolate - brown precipitate is obtai...

A chocolate - brown precipitate is obtained when acetic acid and potassium ferrocyanide is added to an aqueous solution of -

A

Cu

B

Cd

C

Sn

D

Hg

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The correct Answer is:
A
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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -MCQ (Single Correct Type)
  1. The number of electrons present in the 5f - orbital in the ground stat...

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  2. Gold dissolves in aqua regia to form -

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  3. A chocolate - brown precipitate is obtained when acetic acid and potas...

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  4. The aqueous solutions having the same colour are observed in case of -

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  5. Free silver metal reacts with NaCN and forms a water soluble complex i...

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  6. In alkaline medium, MnO(4)^(-) oxides I^(-) to -

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  7. The d - block elements have coloured ions because of -

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  8. The colour of the solution turns blue when a Cu - plate is dipped in a...

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  9. The oxidation state of I in KIO(4) is the same as that of Mn in -

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  10. The reaction between acidified chromic acid solution and H(2)O(2) give...

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  11. Fe^(2+) can be differentiated from Fe^(3+) with the help of -

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  12. 'Platinum black' is -

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  13. Among the following compounds, which one has no unpaired electrons and...

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  14. The natural state of iron and NO (Fe^(3+) and NO or Fe^(2+) and NO^(+)...

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  15. In a neutral medium, 1 mol of MnO(4)^(2-) ion undergoes disproportiona...

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  16. Transition elements have greater tendency to form complexes, because -

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  17. Which to the following represents the electronic configuration of a tr...

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  18. Identify the incorrect statement among the following -

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  19. To support tungsten filament in electric bulbs, which of the following...

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  20. Which of the following will give green hydrated ions -

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