Reaction of silver nitrate solution with phosphorous acid produces:

For the balanced chemical reaction: $IO_3^- + aI^- + bH^+ \to cH_2O + dI_2$,what are the values of $a, b, c$ and $d$ respectively?

Consider the following reaction:
$xMnO_4^{-} + yC_2O_4^{2-} + zH^{+} \rightarrow xMn^{2+} + 2yCO_2 + \frac{z}{2}H_2O$
The values of $x, y$ and $z$ in the reaction are,respectively:

In neutral medium,potassium permanganate oxidises $I^{-}$ to $X$. Identify $X$.

Assign $A, B, C, D$ from the given type of reaction: $C_{(s)} + O_{2(g)} \xrightarrow{\Delta} CO_2 \uparrow$

$KMnO_4$ oxidises oxalic acid in acidic medium. The number of $CO_2$ molecules produced per mole of $KMnO_4$ is