Identify the correct statement(s) in the light of quantitative estimation of aqueous ferrous ions by using acidified permanganate or acidified dichromate solution, under conditions of concentration of all species as 1 M. 

$Mn{O}_4^{-}\left(aq\right)+8H^{+}\left(aq\right)+5e^{-}\to M{n}^{2+}\left(aq\right)+4H_{2}O\left(l\right);E^o=1.51V$

$C{r}_2{O}_7^{2-}\left(aq\right)+14H^{+}\left(aq\right)+6e^{-}\to 2C{r}^{3+}\left(aq\right)+7H_{2}O\left(l\right);E^o=1.38V$

$F{e}^{3+}\left(aq\right)+e^{-}\to F{e}^{2+}\left(aq\right);E^o=0.77V$

$C{l}_2\left(g\right)+2e^{-}\to 2C{l}^{-}\left(aq\right);E^o=1.40V$