Chemistry - Complete Pblock- Question with Solution | TestHub

Here${\mathrm{K}}_2\mathrm{C}{\mathrm{O}}_3$on heating does not produce its oxide as it is thermally stable
$\mathrm{M}\mathrm{g}\mathrm{C}{\mathrm{l}}_2.6{\mathrm{H}}_2\mathrm{O}\stackrel{\mathrm{\Delta }}{\to }\mathrm{M}\mathrm{g}\mathrm{O}+2\mathrm{H}\mathrm{C}\mathrm{l}+5{\mathrm{H}}_2\mathrm{O}$
$2{\mathrm{K}}_2\mathrm{C}{\mathrm{r}}_2{\mathrm{O}}_7\stackrel{\mathrm{\Delta }}{\to }2{\mathrm{K}}_2\mathrm{C}\mathrm{r}{\mathrm{O}}_4+\mathrm{C}{\mathrm{r}}_2{\mathrm{O}}_3+\frac{3}{2}{\mathrm{O}}_2$
${\mathrm{K}}_2\mathrm{C}{\mathrm{O}}_3\stackrel{\mathrm{\Delta }}{\to }$does not decompose but melts
$\text{Cu}{({\text{NO}}_3)}_2\stackrel{\text{Δ}}{\to }\text{CuO}+2{\text{NO}}_2+\frac{1}{2}{\text{O}}_2$