MCQ
In Merck's method, $\mathrm{H}_2 \mathrm{O}_2$ is obtained from ______.
- A$\ce{BaO2 + H2O + CO2}$
- B$\ce{BaO2 + H2SO4}$
- ✓$\ce{Na2O2 + H2SO4}$
- D$\ce{BaO2 + H3PO4}$
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$\ce{Benzaldehyde ->[Nitration] {m}-Nitrobenzaldehyde}$