Environmental Engineering in CE Which of the following is not a natural source of air pollution? Photochemical oxidation of organic matter Biological decay of vegetable matter Volcanic eruptions and lightening discharges None of these Photochemical oxidation of organic matter Biological decay of vegetable matter Volcanic eruptions and lightening discharges None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Arsenic pollutant is not generated in____industries. Tanneries Glass & ceramic Beverages Any of these Tanneries Glass & ceramic Beverages Any of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of dissolved impurities of __________ is responsible for the red brownish color of water. Iron & manganese Bi-carbonates Arsenic Carbonates Iron & manganese Bi-carbonates Arsenic Carbonates ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in Petroleum refinery Iron & steel plant Food industry Municipal sewage treatment Petroleum refinery Iron & steel plant Food industry Municipal sewage treatment ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels. 185 135 105 160 185 135 105 160 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the most practical and economical method for removal of suspended solid matter from polluted water? Chlorination Biological oxidation Sedimentation Skimming off Chlorination Biological oxidation Sedimentation Skimming off ANSWER DOWNLOAD EXAMIANS APP
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