Environmental Engineering in CE The most commonly used chemical coagulant in water treatment is Hydrazine Ferrous sulphate Alum Lime Hydrazine Ferrous sulphate Alum Lime ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of __________ hardness is responsible for the temporary hardness in water. Choride Calcium Sulphate Carbonate Choride Calcium Sulphate Carbonate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The main industrial source of emission of hydrogen sulphide air pollutant is Petroleum refineries Metallurgical roasting & smelting plant Coal based thermal power plants Pulp and paper plant Petroleum refineries Metallurgical roasting & smelting plant Coal based thermal power plants Pulp and paper plant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE What are the methods of treatment & disposal of radioactive wastes? Evaporation & chemical precipitation Fixing into a solid mass with cement and sinking deep in the sea All of these Biological methods & adsorption in ion exchange materials Evaporation & chemical precipitation Fixing into a solid mass with cement and sinking deep in the sea All of these Biological methods & adsorption in ion exchange materials ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Main pollutants released from petroleum refineries is CO, SO₂ & H₂S CO₂, NO & SO₃ SO₃, NO₂ & CO₂ CO₂, H₂S & NO₂ CO, SO₂ & H₂S CO₂, NO & SO₃ SO₃, NO₂ & CO₂ CO₂, H₂S & NO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). 750 20 1500 230 750 20 1500 230 ANSWER DOWNLOAD EXAMIANS APP
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