Redox Reactions

What is the oxidation number of Manganese (Mn) in Potassium Permanganate ($KMnO4$)?...

In Hydrogen Peroxide ($H2O2$), the oxidation state of oxygen is:...

The chemical process in which a substance gains electrons is known as:...

In which of the following compounds does oxygen exhibit a positive oxidation state?...

What is the oxidation state of Sulfur (S) in Sulfuric Acid ($H2SO4$)?...