101. Carcinogenic air pollutants cause
102. TLV of ozone (O3) and phosgene (COCl2) in air is __________ ppm.
103. Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called
104. World's worst radioactive pollution was caused by nuclear reactor disaster which occured in
105. Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes
106. The term Biological Oxygen Demand (BOD) is used in relation to
107. Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by
108. Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in
109. Main pollutants released from petroleum refineries is
110. Which is the most practical and economical method for removal of suspended solid matter from polluted water?
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