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Iron articles get rusted on weathering d...

Iron articles get rusted on weathering due to the formation of

A

FeO

B

`Fe_(2)O_(3)`

C

`Fe_(3)O_(4)`

D

`Fe(OH)_(3)`

Text Solution

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The correct Answer is:
C
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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -National Standard Examination In chemistry
  1. The aqueous solution of salt of a transition metal ion changes colour...

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  2. Iron articles get rusted on weathering due to the formation of

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  3. Chromium has the lowest oxidation state in

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  4. Paramagnetism is not exhibited by

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  5. Articles made of copper or bronze slowly tarnish in air and turn green...

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  6. The cation containing maximum number of unpaired electrons is

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  7. Chromium has the lowest oxidation state in

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  8. Which of the following statements concerning transition elements is fa...

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  9. The magnetic moment of MnSO(4).4H(2)O is:

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  10. Which two of the following reactions are possible? (i) FeCl(3)+SnCl(...

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  11. Europium forms stable Eu^(2+) ions because

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  12. Which of these ion is expected to be coloured in aqueous solution? [...

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  13. How many unpaired electrons are in a Fe^(2+) ion in the ground state?

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  14. In which of the following transition metal ion complexes, the colour i...

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  15. The compound with the lowest oxidation state of iron is:

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  16. The aqua ion which will be almost colorless is-

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  17. MnO(4)^(-) is of intense pink colour, though Mn is in(+7) oxidation st...

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  18. The product formed when chlorine gas is passed over hot iron is-

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  19. The highest magnetic moments is shown by the transition metal ion wit...

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  20. The compound in which Mn has oxidation state off +3 is

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