In dilute alkaline solution,$MnO_4^-$ changes to:

How many moles of $KMnO_4$ will be reduced by $1$ mole of $KI$ in an alkaline medium?

The $Mn^{3+}$ ion is unstable in solution and undergoes disproportionation to give $Mn^{2+}$,$MnO_2$ and $H^{+}$ ion. Write a balanced ionic equation for the reaction.

Reaction of silver nitrate solution with phosphorous acid produces:

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$I_2 + S_2O_3^{2-} \longrightarrow I^{-} + S_4O_6^{2-}$

Metallic tin in the presence of $HCl$ is oxidized by $K_2Cr_2O_7$ to stannic chloride. What volume of decinormal dichromate solution would be reduced by $1 \ g$ of tin? (Atomic weight of $Sn = 118.7 \ g/mol$)