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How does rusting of iron occur ?...

How does rusting of iron occur ?

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Iron when exposed to moist air forms a reddish layer of hydrated ferric oxide .
`2Fe+3O_(2)+xH_(2)rarrunderset("ferric oxide (rust)")(2Fe_(2)O_(3).xH_(2)O`
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Knowledge Check

  • Rusting of iron is

    A
    A decomposition process
    B
    A photochemical process
    C
    An electrochemical
    D
    A reduction process

  • Assertion : Corrosion of iron is commonly known as rusting. Reason : Corrosion of iron occurs in presence of water and air.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

  • Assertion: Corrosion of iron is commonly known as rusting. Reason Corrosion of iron occurs in presence of water and air.

    A
    If both assertion and reason are time and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

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