Quiz Zone

Test your knowledge of Environment! 1. Noise is a) Lound Sound b) Sound of high frequency c) Unwanted Sound d) Low Sound 2. BOD is: a) A measure of the organic matter presents in water b) Usually less than COD c) Biochemical oxygen demand d) All of the above 3. Air Pollution is severe in a) Cities b) Industrial areas c) Densely populated areas d) All of the above 4. Particulate Pollutant are a) small solid particles and liquid droplets b) Liquid droplets c) small solid particles released into teh atmosphere d) All of the above 5. Fine organic and inorganic particles suspended in air is called a) Particulate Pollutant b) Gaseous Pollutant c) Aerosol d) none of above 6. Carbon mono oxide is a pollutant beacause a) it reacts with O2 b) it inhibits glycolysis c) makes nervous system inactive d) reacts with haemoglobin 7. Air Pollution can be of a) natural origin b) artificial or man made origin c) both a and b d) b only 8. The main atmospheric layer near the surface of the earth is a) Troposphere b) Mesophere c) Ionosphere d) Stratosphere Address- ENVIS Cell, Uttarakhand Environment Protection & Pollution Control Board, 29/20, Nemi Road, Dalanwala, Dehradun-248001 (Uttarakhand).