27.1: Introduction
27.2: Types of Polution
- Carbon Monoxide as Pollutant
- Ozone Depletion due to Oxides of Nitrogen and Sulphur
- Acid Rain
- Smog as Pollutant
- Role of Chlorofluorocarbons in Destroying Ozone
- Water pollutents,Oxygen-Demanding Or Industrial Effluents
- Disease-Causing Wastes(Domestic Effluents)
- Agricultural Water Pollutants
- Water Pollutants - Synthetic Organic Compounds
- Effects of Water Pollution
- Nutrient and Thermal Water Pollution
27.3: Factors Affecting the Quality of Water
- Dissolved Oxygen(DO)
- Biochemical Oxygen Demand (BOD)
- Chemical Oxygen Demand (COD)
- Purification of Water
- Water Disinfection by Chlorine
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