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Mark the wrong statement

A

Wrought iron is prepared by heating cast iron in a reverberatory furnace

B

The impurities present in cast iron are oxidised by air

C

The impurities are oxidised by `Fe_2O_3`

D

CO burns with blue flame and the SiMn , and other impurities form slag with silica

Text Solution

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The correct Answer is:
B
The impurities present in cast iron are MnP Si,, etc. are oxidized by `Fe_(2)O_(3)`.
`3Si + 2Fe_(2)O_(3) rarr 4Fe + 3SiO_(2)`
`3 Mn + Fe_(2)O_(3) rarr 2Fe + 3MnO`
`Fe_(2)O_(3) + P_(2)O_(5) rarr 2FePO_(4)`.
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