The advantage(s) of using O_2 rather than air | vedclass

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(D) In the steel industry,using pure $O_2$ instead of air provides several advantages:$1$. Faster reaction rates: Since air contains about $78\%$ nitr

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$I, II$ and $III$

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(D) In the steel industry,using pure $O_2$ instead of air provides several advantages:$1$. Faster reaction rates: Since air contains about $78\%$ nitrogen,which acts as a diluent,using pure $O_2$ increases the concentration of the reactant,leading to faster oxidation of impurities and higher production rates $(I)$.$2$. Efficiency: Because the volume of gas handled is reduced (no nitrogen to heat or process),larger quantities of steel can be processed in the same equipment $(II)$.$3$. Product Quality: Air contains nitrogen,which can react with molten steel to form nitrides,making the steel brittle. Using pure $O_2$ eliminates this,resulting in a purer product free from nitrides $(III)$.

List-$I$	List-$II$
$A$. Calcination	$1$. Galena
$B$. Roasting	$2$. Magnetite
$C$. Magnetic separation	$3$. Pyrometallurgy
$D$. Carbon reduction of metal oxide	$4$. Malachite

The advantage$(s)$ of using $O_2$ rather than air in the steel industry is(are):
$(I)$ There is a faster conversion,so a given plant can produce more steel in a day.
$(II)$ Larger quantities can be handled.
$(III)$ It gives a purer product,and the surface is free from nitrides.

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Match the items of List-$I$ with those of List-$II$ and choose the correct option given below.
List-$I$ List-$II$
$A$. Calcination $1$. Galena
$B$. Roasting $2$. Magnetite
$C$. Magnetic separation $3$. Pyrometallurgy
$D$. Carbon reduction of metal oxide $4$. Malachite

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The advantage$(s)$ of using $O_2$ rather than air in the steel industry is(are):$(I)$ There is a faster conversion,so a given plant can produce more steel in a day.$(II)$ Larger quantities can be handled.$(III)$ It gives a purer product,and the surface is free from nitrides.