`Yb^(2+)` acts as a reductant while `Tb^(4+)` act as an oxidant. Why?

H_2O_2 acts as a reducing agent in its:

H_2S acts only as a reducing agent but SO_2 acts as a reducing as well as oxidising agent. Why?

Write any reaction in which H_2O acts as an oxidising agent.

KMnO_4 act as an oxidising agent in :

In which case Ozone acts as reductant?

Write balance chemical equations of two reactions in which KMnO_(4) acts as an oxidising agent in the acidic medium.

In which SO_2 acts as oxidant, while reacting with ?

H_2 acts as an oxidant in its reaction with:

Why Zn^(2+) salts are white while Ni^(2+) salts are blue ?

Why does ozone act as a powerful oxidant?