$KMnO_4$ (acidified) $+ HCl \rightarrow H_2O + X_{(g)},$ $X$ is a

Given below are two statements:
Statement-$I$ : Heating $NaCl$ with concentrated $H_2SO_4$ and $MnO_2$ results in oxidation of $Mn$.
Statement-$II$ : Heating $NaI$ with concentrated $H_2SO_4$ and $MnO_2$ results in reduction of $Mn$.
In light of the above statements, choose the most appropriate answer from the options given below:

Assign $A, B, C, D$ from the given type of reaction.
$Na_2[Zn(OH)_4] + 4HCl \longrightarrow ZnCl_2 + 2NaCl + 4H_2O$

Which of the following compounds does not produce a green-coloured product on thermal decomposition?

Which gases are formed by the oxidation of carbon with concentrated $H_2SO_4$?

Assign $A, B, C, D$ from the given type of reaction.
$PbO_2 + HNO_3 \text{ (dil.)} \longrightarrow \text{No reaction}$