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Excess of KI reacts with CuSO(4) solutio...

Excess of `KI` reacts with `CuSO_(4)` solution and `Na_(2)SO_(3)` solution is added to it. Which of the following statements in incorrect for the reaction?

A

Evolved `I_(2)` is reduced

B

`C u l_(2)` is formed

C

`Na_(2)S_(2)O_(3)` is oxidised

D

`Cu_(2)I_(2)` is formed

Text Solution

Verified by Experts

The correct Answer is:
B
`CuSO_(4)+Kl to Cu_(2)I_(2)+I_(2)`
`Na_(2)S_(2)O_(3)+I_(2)""^(-1) to Na_(2)S_(4)O_(6)+NaI`
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BANSAL-D AND F BLOCK ELEMENTS-Exercise-1 (Single Correct Choice Type)
  1. Calomel is the name of

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  2. Cerium (Z= 58) is an important nember of the lanthanoids . Which of th...

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  3. Excess of KI reacts with CuSO(4) solution and Na(2)SO(3) solution is a...

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  4. Formula of chromyl chloride is-

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  5. Calomel (H(2)Cl(2)) on reaction with ammonium hydroxide gives

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  6. The reaction, 2Cu^(+)toCu+Cu^(2+) is called-

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  7. The lanthanide contraction is responsible for the fact that

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  8. Amongst [TiE(6)]^(2-), [CoF(6)]^(3-), Cu(2)Cl(2) and [NiCl(4)]^(2-) [A...

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  9. Lanthanoid contraction is caused due to:

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  10. CrO(3) is a//an"….."

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  11. Which of the following is expected to have lowest magnetic moment-

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  12. Identify the incorrect statement among the following.

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  13. Which of the following ion has the maximum magnetic moment?

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  14. Transition elements are usually characterised by variable oxidation st...

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  15. In context with the transition elements, which of the following statem...

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  16. What is the general electronic configuration of transition elements

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  17. Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 ...

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  18. The highest oxidation state achieved by trantion metal is given by -

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  19. In context of the lanthanoids, which of the following statements is no...

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  20. The equilibrium Cr(2)O(7)^(2-)hArr 2CrO(4)^(2-)

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