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(D) The given reaction is: $2Pb(NO_3)_2(s) \xrightarrow{\Delta} 2PbO(s) + 4NO_2(g) + O_2(g)$.In this reaction,a single compound,lead$(II)$ nitrate,dec

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$D$. for either thermal combination redox reaction or thermal decomposition redox reaction.

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(D) The given reaction is: $2Pb(NO_3)_2(s) \xrightarrow{\Delta} 2PbO(s) + 4NO_2(g) + O_2(g)$.In this reaction,a single compound,lead$(II)$ nitrate,decomposes upon heating to form multiple products.This is a thermal decomposition reaction.Furthermore,the oxidation state of $N$ changes from $+5$ in $Pb(NO_3)_2$ to $+4$ in $NO_2$,and the oxidation state of $O$ changes from $-2$ in $Pb(NO_3)_2$ to $0$ in $O_2$.Since it involves a change in oxidation states,it is a redox reaction.Therefore,it is a thermal decomposition redox reaction,which corresponds to option $D$.

Column-$I$	Column-$II$
$A$. $C_2O_4^{2-} \rightarrow 2CO_2$	$P$. $2$
$B$. $Cr_2O_7^{2-} + 14H^{+} \rightarrow 2Cr^{3+}$	$Q$. $6$
$C$. $2Na_2S_2O_3 \rightarrow Na_2S_4O_6$	$R$. $3$
$D$. $MnO_4^{-} \rightarrow MnO_2$	$S$. $1$

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$Pb(NO_3)_2 \xrightarrow{\Delta} PbO + NO_2 + O_2$

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Assign $A$,$B$,$C$,$D$ from the given type of reaction.$Pb(NO_3)_2 \xrightarrow{\Delta} PbO + NO_2 + O_2$