The oxidation number of S in H₂S₂O₈ is:

1. + 2

2. + 4

3. + 6

4. + 7

The oxidation state of nitrogen in N₃H is:

1. $+\frac{1}{3}$

2. + 3

3. –1

4. $-\frac{1}{3}$

The oxidation state of Cr in [Cr(NH₃)₄Cl₂]⁺ is:

(1) +3

(2) +2

(3) +1

(4) 0

1. 1

2. 2

3. 3

4. 0

The oxidation number of P in Mg₂P₂O₇ is - 

What is the oxidation number of sulphur in $$
\(Na_2S_2O_6\)

What is the oxidation number of Co in $\left[Co{\left(N{H}_3\right)}_{4}ClN{O}_2\right]$

(1) + 2

(2) + 3

(3) + 4

(4) + 5

When KMnO₄ acts as an oxidizing agent and ultimately forms \(\left[\mathrm{MnO}_4\right]^{-2}, \mathrm{MnO}_2, \mathrm{Mn}_2 \mathrm{O}_3, \mathrm{Mn}^{+2}\)${}^{}$
then the number of electrons transferred in each case, respectively, are:

For the redox reaction
$Mn{O}_4^{-}+C_2{O}_4^{-2}+H^{+}\to M{n}^{2+}+C{O}_2+H_{2}O$
the correct coefficients of the reactants for the balanced reaction are:

Which of the following is the strongest oxidising agent?

1. $Br{O}_3^{-}/B{r}^{2+},E^o=+1.50$

2. $F{e}^{3+}/F{e}^{2+},E^o=+0.76$

3. $Mn{O}_4^{-}/M{n}^{2+},E^o=+1.52$

4. $C{r}_2{O}_7^{2-}/C{r}^{3+},E^o=+1.33$