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What are the 200 substances present in coal-tar?

There is a huge range of chemicals derived from coal tar distillation. The main product (approx. 50 %) of the tar refinery is the distillation residue "coal tar pitch". The distillates are crude naphthalene and technical fractions (aromatic oils). The major single coumpounds are naphthalene (~10 %), phenanthrene (~4,5 %) and anthracene (~1,3 %). Some compounds (e.g. naphthalene, anthracene, carbazole, phenol, cresols and xylenols) are commercially available from coal tar distillation.

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Coal-tar is complex & is mainly made of mixture of phenols,polycyclic aromatic hdrocarbons & heterocyclic compounds.By the distillstion of coal tar  first of all  we get carbon & then we get  benzene, toluene ,xylene, napthalene, piridine, naphthol, cresol , anthracene & phenonthrene.The residue left after distillation is called pitch.

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C   +  O2           →        CO2↑
What does "↑"this sign mean?
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The name of 200 substance the Coal Tar obtained
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The Coal Tar obtained for 200 Khol da apan 200 substance approximately what are the name of that The name of substance which the Coal Tar obtained
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