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Consider the following statements in the...

Consider the following statements in the extraction of iron from haematite:
(I) `CO`is the main reducing agent
(II) `Fe_(2)O_(3)`is used to oxidise the impurities be Bessemer process
(III) In basic oxygen process, air is used to oxidise the impurities.
(IV) When air is used to oxidise the impurities, iron nitride is formed in iron
Pick the correct set of statement `(s)`:

A

`I,IV`

B

`I,II`

C

`I,II`and`III`

D

`I,II`and`IV`

Text Solution

Verified by Experts

The correct Answer is:
A
In `BOP` (Basic oxygen process), impurities in iron are oxidised by pure oxygen.
If impurity is oxidised by air, small amout of `Fe` changes to `Fe_(3)N`.
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Knowledge Check

  • Pure O_(2) instead of air is used to oxidise the pig iron because:

    A
    Molten metal took up small amount of nitrogen which makes the steel brittle
    B
    Air is not as efficient to oxidise all the impurities to their respective oxides
    C
    Air contains moisture and will precipitate iron as `Fe_(2)O_(3)`
    D
    Iron reacts with air to `FeCO_(3)`

  • Pure O_(2) instead of air is used to oxidise the pig iron because:

    A
    Molten metal took up small amount of nitrogen which makes the steel brittle
    B
    Air is not as efficient to oxidise all the impurities to their respective oxides
    C
    Air contains moisture and will precipitate iron as `Fe_(2)O_(3)`
    D
    Iron reacts with air to `FeCO_(3)`

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    A
    FTTT
    B
    FTFF
    C
    FFTT
    D
    TFFT
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