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D and F Block Elements question

2015 · Q90
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D and F Block Elements question

2015 · Q90

NEETChemistryD and F Block ElementsMCQ+4 / −1
Which of the following processes does not involve oxidation of iron?
  1. A
    Formation of Fe(CO)5 from Fe.
  2. B
    Liberation of H2 from steam by iron at high temperature.
  3. C
    Rusting of iron sheets.
  4. D
    Decolourisation of blue CuSO4 solution by iron.
View written solutionFree

Correct answer: A

Fe + 5CO →\to→ Fe(CO)5

Thus, formation of Fe(CO)5 from Fe does not involve oxidation of iron because there is no change in oxidation state.

Rest in all options there is a change in oxidation state of Fe.

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