MCQ
In the above chemical reaction sequence " $\mathrm{A}$ " and " $\mathrm{B}$ " respectively are :
- ✓$\mathrm{O}_3, \mathrm{Zn} / \mathrm{H}_2 \mathrm{O}$ and $\mathrm{NaOH}_{\text {(alc.). }} / \mathrm{I}_2$
- B$\mathrm{H}_2 \mathrm{O}, \mathrm{H}^{+}$and $\mathrm{NaOH}_{\text {(alc.) }} / \mathrm{I}_2$
- C$\mathrm{H}_2 \mathrm{O}, \mathrm{H}^{+}$and $\mathrm{KMnO}_4$
- D$\mathrm{O}_3, \mathrm{Zn} / \mathrm{H}_2 \mathrm{O}$ and $\mathrm{KMnO}_4$
