Consider the following reactions (unbalanced) | vedclass

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(D) The balanced reactions are:$Zn + 2H_2SO_4 	ext{ (hot conc.)} ightarrow ZnSO_4 (G) + SO_2 (R) + 2H_2O (X)$$Zn + 2NaOH 	ext{ (conc.)} ightarro

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$2, 3, 4$

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(D) The balanced reactions are:$Zn + 2H_2SO_4 	ext{ (hot conc.)} ightarrow ZnSO_4 (G) + SO_2 (R) + 2H_2O (X)$$Zn + 2NaOH 	ext{ (conc.)} ightarrow Na_2ZnO_2 (T) + H_2 (Q)$$ZnSO_4 (G) + H_2S + 2NH_4OH ightarrow ZnS (Z) + 2H_2O (X) + (NH_4)_2SO_4 (Y)$Analysis of statements:$(1)$ In $Na_2ZnO_2$ $(T)$,the oxidation state of $Zn$ is $+2$,not $+1$. So,statement $(1)$ is incorrect.$(2)$ $Q$ is $H_2$. The bond order of $H_2$ is $1$. So,statement $(2)$ is correct.$(3)$ $Z$ is $ZnS$,which is white in colour. So,statement $(3)$ is correct.$(4)$ $R$ is $SO_2$. $SO_2$ has a bent or $V$-shaped geometry. So,statement $(4)$ is correct.Thus,statements $(2, 3, 4)$ are correct.

List-$I$ (Type of reaction)	List-$II$ (Unbalanced equation)
$A$. Combination reaction	$(i)$ $AgNO_3 + CaCl_2 \longrightarrow AgCl + Ca(NO_3)_2$
$B$. Decomposition reaction	$(ii)$ $Cl_2 \longrightarrow Cl^- + ClO_3^-$
$C$. Disproportionation reaction	$(iii)$ $Mg + N_2 \longrightarrow Mg_3N_2$
$D$. Displacement reaction	$(iv)$ $KClO_3 \xrightarrow{\Delta} KCl + O_2$

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