Give 2 examples in each case of substance that: I. Can remove moisture from the…

Give 2 examples in each case of substance that:
I. Can remove moisture from the sample of air.
II. Form brick red precipitate on being warmed with Fehling solution.
III. Decompose on heating to produce a brown gas and a metallic oxide residue.
IV. Can be used as the unstable phase (solvent) in the separation of chlorophyll by paper chromatography.?

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