QA: Adding Hydrogen Peroxide to an Aqueous solution of a Salt

Matching exercise. Aqueous Hydrogen peroxide is added to a sample of chemical and the following observations noted.

Learn the observations made and the correct inferences that flashes.
Brown pptManganate(VII) because MnO2 is the brown ppt.
Purple solution is decolourisedManganate(VII) in acid solution
Pale green solution turning yellowIron(II) becoming Iron(III) in acidic solution
Green ppt turns brownIron(II) hydroxide to Iron(III) hydroxide
Brown ppt in alkaline solutionLead (II) because brown ppt is PbO2
Green alkaline solution goes yellowChromium(III) to chromate(VI)
Brown solution or black pptIodine from iodide in acid solution