Question

Write true or false for the following statements.

The catalyst ${\mathrm{MnO}}_2$ is used for laboratory preparation of oxygen gas.

• A. True
• B. False

Answer 1

The correct option is A True

• The given reaction is:
• $\underset{\mathrm{Peroxide}}{\underset{\mathrm{Hydrogen}}{2{\mathrm{H}}_2{\mathrm{O}}_2\left(\mathrm{l}\right)}}\underset{\mathrm{Catalyst}}{\overset{{\mathrm{MnO}}_2}{\to }}\underset{\mathrm{Water}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}$
• Oxygen is prepared in laboratory by treating hydrogen peroxide with catalyst manganese dioxide $\left({\mathrm{MnO}}_2\right)$.
• Hence, the given statement is true.