$SO_2 + H_2S \to$ product. The final product is

The following reaction occurs in acidic medium: $KMnO_4 + 8 H^{+} + 5 e^{-} \longrightarrow K^{+} + Mn^{2+} + 4 H_2O$. What is the equivalent weight of $KMnO_4$? (Molecular weight of $KMnO_4 = 158$)

Assign $A, B, C, D$ from the given type of reaction.
$Fe^{2+}(aq.) + Cr_2O_7^{2-}(aq.) + H^+(aq.) \longrightarrow Fe^{3+}(aq.) + Cr^{3+}(aq.) + H_2O(l)$

When copper is heated with concentrated $HNO_3$,it produces:

Which compound is formed when $H_2S$ gas is passed through an acidic solution of $KMnO_4$?

Aqueous solutions of $Na_2S_2O_3$ on reaction with $Cl_2$ gives