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Copper sulphate dissolves in excess of K...

Copper sulphate dissolves in excess of KCN to give

A

`Cu(CN)_2`

B

`CuCN`

C

`[Cu(CN)_4]^(3-)`

D

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

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-D-BLOCK ELEMENTS-OBJECTIVE EXERCISE-3 (PREVIOUS NEET/AIPMT QUESTIONS)
  1. More number of oxidation states are exhibited by the actinoids than by...

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  2. In which of thc following pairs are both the ions coloured in aqueous ...

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  3. Copper sulphate dissolves in excess of KCN to give

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  4. Which one of the following ions is the most stable in aqueous solution...

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  5. Identify the incorrect statement among the following

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  6. The correct order of decreasing second ionization enthalpy of Ti(22), ...

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  7. Which one of the elements with the following outer orbital configurati...

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  8. Which of the following ions will exhibit colour in aqueous solutions ?

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  9. Which one of the following ions has electronic configuration [Ar]3d^6 ...

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  10. Which of the following pairs has the same size

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  11. Match List I (substances) with List II (processes) employed in the man...

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  12. Which of the following oxidation states is common for all lanthanides ...

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  13. Compare the stability of + 2 oxidation state of the elements of the fi...

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  14. Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. Thi...

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  15. Which of the statements is not true?

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  16. Which one of the following does not correctly represent the correct or...

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  17. Four successive members of the first series of the transition metals a...

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  18. Catalytic activity of transition elements and their compounds is due t...

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  19. Which of the following exhibits only +3 oxidation state ?

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  20. Which of the following does not give oxygen on heating?

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