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What happen when a solution of potassium...

What happen when a solution of potassium chromate is treated with an excess of dil. Nitic acid?

A

`Cr^(3+)` and `Cr_(2)O_(7)^(2-)` are formed

B

`Cr_(2)O_(7)^(2-)` and `H_(2)O` are formed

C

`Cr_(2)O_(7)^(2-)`is reduced to `+3` state pf `Cr`

D

`Cr_(2)O_(7)^(2-)` is oxidised to `+7` state of `Cr`

Text Solution

Verified by Experts

The correct Answer is:
B
`CrO_(4)^(-2)overset(H^(+)(to)Cr_(2)O_(7)^(-2)`
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BANSAL-D AND F BLOCK ELEMENTS-Exercise-1 (Single Correct Choice Type)
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  2. The ion pair of the following in which both the ions have unpaired ele...

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  3. What happen when a solution of potassium chromate is treated with an e...

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  4. Transition elements act as catalyst because-

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  6. Calomel is the name of

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

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

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  9. Formula of chromyl chloride is-

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

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

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  12. The lanthanide contraction is responsible for the fact that

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

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  14. Lanthanoid contraction is caused due to:

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  15. CrO(3) is a//an"….."

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

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

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