Match the conversions in Column-I with the ty | vedclass

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(A) . $PbS \rightarrow PbO$: This is an oxidation process of a sulfide ore in the presence of air,which is $p$. roasting.$B$. $CaCO_3 \rightarrow CaO$

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$A-p, B-q, C-p, r, D-p, s$

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(A) . $PbS \rightarrow PbO$: This is an oxidation process of a sulfide ore in the presence of air,which is $p$. roasting.$B$. $CaCO_3 \rightarrow CaO$: This is the thermal decomposition of a carbonate ore in the absence of air,which is $q$. calcination.$C$. $ZnS \rightarrow Zn$: $ZnS$ is first roasted to $ZnO$ ($p$. roasting) and then reduced using carbon ($r$. Carbon reduction).$D$. $Cu_2S \rightarrow Cu$: $Cu_2S$ is partially roasted to $CuO$ and then reacts with remaining $Cu_2S$ to form $Cu$ ($p$. roasting and $s$. self reduction).Therefore,the correct matches are: $A-p, B-q, C-p, r, D-p, s$.

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Column-$I$	Column-$II$
$A$. $PbS \rightarrow PbO$	$p$. roasting
$B$. $CaCO_3 \rightarrow CaO$	$q$. calcination
$C$. $ZnS \rightarrow Zn$	$r$. Carbon reduction
$D$. $Cu_2S \rightarrow Cu$	$s$. self reduction