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

B

`CrO_(4)^(2-)` is reduced to +3 state of Cr

C

`CrO_(4)^(2)` is oxidised to +7 state of Cr

D

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

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The correct Answer is:
A
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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 3
  1. which of the following ions has the maximum magnetic moment ?

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  2. The most common oxidation states of cerium are

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

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  4. Which one of the following nitrates will leaves behind a metal on stro...

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  5. The atomic number of V,Cr, Mn and Fe are respectively 23,24,25 and 26....

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  6. Which of the following group of transition metals is called coinage me...

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  7. The number of d-electrons retained in Fe^(2+) (At. No. Fe=26) ions are...

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  8. Ammonia forms the complex [Cu(NH3)4]^(2+) with copper ions in alkaline...

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  9. The radius of La^(+) (at no 57) is 1.06Å. What may be the radius of Lu...

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

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  11. The lanthanide contraction is responsible for the fact that

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  12. Which of the following factors may be regarded as the main cause of la...

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  13. The spin-only magnetic moment [in units of Bohr magneton, (mu(B) of Ni...

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  14. lanthanoid contraction is caused due to:

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  15. Identify the incorrect statement among the following.

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  16. The actinoids exhibit, more member of oxidation states in general than...

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  17. Larger number of oxidation state are exhibited by the actinoids than t...

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

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

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  20. The correct order of E(M^(2+)//M)^(@) Values with negative sign for th...

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