How do you separate different pigments from an extract of flower petals?

Which separation techniques will you apply for the separation of the following ? (a) Sodium chloride from its solution in water. (b) Ammonium chloride from a mixture containing sodium chloride and ammonium chloride. ( c) Small pieces of metal in the engine oil of a car. (d) Different pigments from an extract of flower petals. (e) Butter from cards (f) Oil from water (g) Tea leaves from tea. (h) Iron pins from sand (i) Wheat grains from husk. (j) Find mud particles suspended in water.

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How do you separate colour from a mixture of colours?