Medium
In the $Bessemer$ and $open-hearth$ process for the manufacture of steel,which one of the following is used for the removal of carbon in part or whole?
$Bessemer \to$ $Open-hearth$
$Bessemer \to$ $Open-hearth$
- A$Ferric \ oxide \to$ $Air$
- B$Air \to$ $Ferric \ oxide$
- C$Oxygen \to$ $Scrap \ iron$
- D$Air \to$ $Scrap \ iron$
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In the extraction of copper,when molten copper is cooled slowly,blister copper is obtained due to the evolution of which of the following gases?
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