The dye in black ink can be separated by the method of:
evaporation
fractional distillation
dialysis
chromatography
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC Geoscientist – 2020
Black ink is typically a mixture of several different coloured dyes. Chromatography is a technique used to separate components of a mixture based on their differential partitioning between a stationary phase and a mobile phase. Different dyes in the ink travel at different rates through the stationary phase (like paper), causing them to separate.