Complex sentence: An auxochrome helps a dye to bind to the object that is to be colored.electrolytic dissociation of the auxochrome group helps in binding and it is due to this reason basic substance take acidic dye.
Split into simpler sentences: An auxochrome helps a dye to bind to the object that is to be colored. Electrolytic dissociation of the auxochrome group helps in binding and it is due to this reason a basic substance takes an acidic dye.