An aqueous solution containing glucose, sodium hydroxide, methylene blue and some air is shaken in a closed bottle; it turns from colorless to blue and then decolorizes again after a while.
2.
Vinyl Ether rapidly decolorizes a solution of bromine in carbon tetrachloride; it is also rapidly oxidized by aqueous potassium permanganate; sulfuric acid reacts with vinyl ether producing a black tarry resin and some acetaldehyde . ( Major, 1935)
मोबाइल