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Fe^(3+) is reduced to Fe^(3+) by sing...

`Fe^(3+)` is reduced to `Fe^(3+)` by sing

A

`H_(2)O_(2)` in presence of NaoH

B

`Na_(2)O_(2)` in water

C

`H_(2)O_(2)` in presence of `H_(2)SO_(4)`

D

`Na_(2)O_(2)` in presence of `H_(2)SO_(4)`.

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The correct Answer is:
C, D
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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 3
  1. Consider the following list of reagent "Acidified" K(2)Cr(2)O(7), "a...

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  2. Which of the following statement are correct about Cr^(2+) (Z = 24) an...

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  3. Fe^(3+) is reduced to Fe^(3+) by sing

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  4. In the following sequence in aqueous solution, the species X, Y and Z,...

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  5. Which of the following combination will produce H(2) gas ?

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  6. Number of electrons transferred in each case when KMnO(4) acts as an o...

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  7. which of the following ions has the maximum magnetic moment ?

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  8. The most common oxidation states of cerium are

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

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

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

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

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

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

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

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

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  17. The lanthanide contraction is responsible for the fact that

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

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

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  20. lanthanoid contraction is caused due to:

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