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NTA Abhyas NEET2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice

During refining of liquid iron to steel, CaO plays various roles, out there which of the following is most important

Options

  1. ATo make a slag with S i O 2 formed
  2. BTo prevent oxidation of sulphur
  3. CTo prevent higher concentration of phosphorus in steel
  4. DTo make a very fluid slag

Correct answer

C. To prevent higher concentration of phosphorus in steel

Step-by-step solution

During refining of liquid iron to steel, CaO plays vital role to prevent higher concentration of phosphorus in steel.

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