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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:
A, B
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Fe^(3+) is reduced to Fe^(2+) of NaOH

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GRB PUBLICATION-SALT ANALYSIS-Multiple Objective Type
  1. Na(2)HPO(4)+ Reagent 'M'rarr white ppt. The reagent 'M' is:

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  2. Unknown salt + AI-powder +NaOH (conc) rarr Gas comes out which Nessler...

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

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  4. The reagent(s) that can selectively precipitate S^(2-) from a mixture ...

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  5. The equilibrium 2Cu^(1) hArr Cu^(0)+Cu^(11) in aqueous medium at 2...

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  6. Which of the following metal carbonate will give of metal and oxygen o...

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  7. Select the correct statements:

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  8. When Ag(2)CO(3) is heated then product will be:

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  9. When compound A (orange red) is heated then green coloured oxide of (B...

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  10. Which of the following hydrated salts will not become anhydrous on hea...

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  11. Which of the following metal nitrate produce NO(2) on heating?

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  12. Which of the following oxides turns yellow on heating and becomes whit...

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  13. A compound gives 'X' gas on addition of dilute HCI. The gas 'X', when ...

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  14. Which of the following anion(s) gives white ppt. with CaCI(2) in aqueo...

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  15. Which of the following reagent(s) form ppt. with Na(2)CO(3)?

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  16. The precipitate of Ag(2)CO(3) dissolve in:

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  17. Which of the following interfering radicals form volatile product with...

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  18. When salt solution 'A' is treated with dilute HCI it gives off gas 'B'...

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  19. Observe the following experiment. The correct statement about set...

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  20. Which of the following compound(s) gives green solution, when treated ...

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