Name the process by which all the dyes present in black ink can be recovered

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Solution

Paper chromatography can be used to separate dyes present in black ink
Paper chromatography uses paper as the stationary phase and water as the solvent (mobile phase), when black ink dotted solvent will rise and blue, red, and yellow colors separated into different heights.
Therefore, paper chromatography is the process by which all the dyes present in black ink can be recovered

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