A) $Hg^{2 +},\ H_{2}SO_{4},\ OH^{-}$
B) $KMnO_{4}/H_{2}SO_{4},OH^{-}$
C) $H_{2}Cr_{2}O_{7},\ dry\ HCl$
D) $O_{3},\ Zn,\ H_{2}O,\ OH^{-}$
Explanation
The correct answer is Option B: $KMnO_{4}/H_{2}SO_{4},OH^{-}$.
A detailed explanation for this question is being prepared.