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) Hydrocarbons CO₂ SO₂ CFC (chloro fluoro carbon) Hydrocarbons CO₂ SO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The main industrial source of emission of hydrogen sulphide air pollutant is Metallurgical roasting & smelting plant Pulp and paper plant Petroleum refineries Coal based thermal power plants Metallurgical roasting & smelting plant Pulp and paper plant Petroleum refineries Coal based thermal power plants ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In sewage treatment, its sedimentation is speeded up by commonly adding Hydrochloric acid Copper sulphate Sodium sulphate Lime Hydrochloric acid Copper sulphate Sodium sulphate Lime ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE What are the methods of treatment & disposal of radioactive wastes? Biological methods & adsorption in ion exchange materials Fixing into a solid mass with cement and sinking deep in the sea Evaporation & chemical precipitation All of these Biological methods & adsorption in ion exchange materials Fixing into a solid mass with cement and sinking deep in the sea Evaporation & chemical precipitation All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level in a quiet private business office is about __________ decibels. 85 25 50 70 85 25 50 70 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Aerosols present in atmospheric air may be Neutral Combination of all A, B & C Negatively charged Positively charged Neutral Combination of all A, B & C Negatively charged Positively charged ANSWER DOWNLOAD EXAMIANS APP
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