Answer. It is a mixture of more than 200 different organic compounds, mostly
aromatic. Some of the important aromatic compounds are benzene, phenol, toluene, aniline, etc. These chemicals are used to synthesize drugs, dyes, explosives, paints, varnishes, plastics, synthetic fiber and pesticides. Besides these valuable chemicals, the black residue of the coal tar is called pitch. -It is used for surfacing of roads and roofs.