Thermal decomposition | D and F Block Element |JEE MAIN 2019

JEE MAIN 2019

12-04-2019 S2

Question

Thermal decomposition of a Mn compound $(\mathrm{X})$ at 513 K results in compound $\mathrm{Y}, \mathrm{MnO}_2$ and a gaseous product. $\mathrm{MnO}_2$ reacts with NaCl and concentrated $\mathrm{H}_2 \mathrm{SO}_4$ to give a pungent gas $\mathrm{Z} . \mathrm{X}, \mathrm{Y}$ and Z respectively are:

Select the correct option:

$\mathrm{K}_2 \mathrm{MnO}_4, \mathrm{KMnO}_4$ and $\mathrm{Cl}_2$

$\mathrm{K}_3 \mathrm{MnO}_4, \mathrm{~K}_2 \mathrm{MnO}_4$ and $\mathrm{Cl}_2$

$\mathrm{K}_2 \mathrm{MnO}_4, \mathrm{KMnO}_4$ and $\mathrm{SO}_2$

$\mathrm{KMnO}_4, \mathrm{~K}_2 \mathrm{MnO}_4$ and $\mathrm{Cl}_2$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution