These classes of compounds
find wide applications in industry as well as in day-
to-day life They are used as solvents for relatively
non-polar compounds and as starting materials for
the synthesis of wide range of organic compounds Chlorine containing antibiotic, chloramphenicol,
produced by microorganisms is very effective for the
treatment of typhoid fever Our body produces iodine
containing hormone, thyroxine, the deficiency of which
causes a disease called goiter