What is equivalents per mole? Which has maximum number of equivalents per mole of the oxidant?
  $$
\begin{align}
\ce{MnO4- + H2O2 &amp;-&gt; Mn^2+ + O2}\tag{i}\\
\ce{Cr2O7^2- + Fe^2+ &amp;-&gt; 2 Cr^3+ + Fe^3+}\tag{ii}
\end{align}
$$


The answer is the second option. I wanna know why

If there's another term different from equivalent mass like equivalents, then I tried doing it using the formula = No.of moles of oxidant x n factor (no of electrons gained)
The question can be understood as:
Which one of the following oxidants has a greater n-factor as there's only 1 mole each of permanganate ion and dichromate ion.

The n-factor of permanganate ion is (7-2)=5

while 

The n-factor of dichromate ion is (6*2-3*2)=6

So, the answer is the 2nd reaction.