Redox Reactions

What is the oxidation number of Manganese (Mn) in Potassium Permanganate ($KMnO_4$)?

In Hydrogen Peroxide ($H_2O_2$), the oxidation state of oxygen is:

What is the oxidation number of Chromium (Cr) in $K_2Cr_2O_7$?

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

Which of the following is an example of a disproportionation reaction?

The oxidation state of Carbon (C) in Glucose ($C_6H_{12}O_6$) is:

What is the average oxidation state of Iron (Fe) in $Fe_3O_4$?

What is the oxidation number of Sulfur (S) in Caro's acid ($H_2SO_5$)?

What are the oxidation states of Chlorine in Bleaching Powder ($CaOCl_2$)?

The oxidation numbers of the two Nitrogen atoms in Ammonium Nitrate ($NH_4NO_3$) are respectively:

Which of the following is NOT a redox reaction?