$H_2O_2$ reduces $MnO_4^-$ ion to:

In acidic medium,dichromate ion oxidises ferrous ion to ferric ion. If the gram molecular weight of potassium dichromate is $294 \ g$,its gram equivalent weight is $...$ grams.

The number of moles of $KMnO_4$ reduced by one mole of $KI$ in alkaline medium is:

For the following balanced equation,$a, b, c$ and $d$ will be respectively:
$IO_3^- + aI^- + bH^+ \to cH_2O + dI_2$

What is the number of moles of electrons gained by one mole of oxidizing agent in the following redox reaction?
$Zn_{(s)} + 2HCl_{(aq)} \longrightarrow ZnCl_2(aq) + H_2(g)$

The equivalent weight of $K_2Cr_2O_7$ in an acidic medium is...... (Molecular weight $= M$)