Water pollution. Hydrological cycle; Disturbance in natural cycle; the course and effect of man/made pollution; reduction in oxygen level in rivers and lakes pollution; pollution resulting from oil; metal and chlorinated hydrocarbon; thermal pollution; monitoring of pollution level; chemical oxygen demand; biochemical oxygen demand and other parameter; treatment method.Air pollution: The origin of air pollutants; chemical formation of air pollutant from burning; analytical method to control air pollution; Atmospheric chemistry; atmosphere scattering; atmospheric pollution control.References:1. Gary W. Vanloon, Stephen J. Buffy (2005). Environmental Chemistry: A Global Perspective (2nd Edition). Oxford Fajar. 2. R.W. Raiswell, P. Brimblecombe, D.L. Dent and P.S. Liss (1991). Environmental Chemistry. The Earth-Air-Water Factory. Edward Arnold, London. 3. R.M. Harrison, (ed) (1997). Understanding Our Environment: An Introduction to Environmental Chemistry and Pollution (2nd Edition). The Royal Society of Chemistry Cambridge.4. R.M. Harrison (2006). Principles of Environmental Chemistry. Royal Society of Chemistry. University of Birmingham, UK. 5. Stanley E. Manahan (1991). Environmental Chemistry (5th Edition).6. Harrison and Perry (Ed) (1986). Handbook of Air Pollution Analysis (2nd Edition). Chapman & Hall.