Environmental Engineering in CE Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of CFC (chloro fluoro carbon) CO₂ SO₂ Hydrocarbons CFC (chloro fluoro carbon) CO₂ SO₂ Hydrocarbons ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria. Parasitic Aerobic Saphrophytic Anaerobic Parasitic Aerobic Saphrophytic Anaerobic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The upper layer of atmosphere is called the Troposphere Stratosphere Ionosphere None of these Troposphere Stratosphere Ionosphere None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE World's worst radioactive pollution was caused by nuclear reactor disaster which occured in Arizona (U.S.A.) Pensylvania (U.S.A.) Chernobyl (undivided U.S.S.R.) Moscow (U.S.S.R.) Arizona (U.S.A.) Pensylvania (U.S.A.) Chernobyl (undivided U.S.S.R.) Moscow (U.S.S.R.) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of excess flourine in water causes Dental cavity Fluorosis Respiratory disease Tooth decay Dental cavity Fluorosis Respiratory disease Tooth decay ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of potable water should be between 13 to 14 4 to 5 6.5 to 8 1 to 1.5 13 to 14 4 to 5 6.5 to 8 1 to 1.5 ANSWER DOWNLOAD EXAMIANS APP
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