Environmental Engineering in CE Salt content in sea water is about __________ percent. 1 10 0.5 3.5 1 10 0.5 3.5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream? Mechanical flocculation Sedimentation tank Circular clarifier Chemical coagulation Mechanical flocculation Sedimentation tank Circular clarifier Chemical coagulation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Infective bacteria in water is killed by the __________ process. Aeration None of these Sterilisation Disinfection Aeration None of these Sterilisation Disinfection ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the Forestation Green house effect Vegetation Rain Forestation Green house effect Vegetation Rain ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by Biological oxygen pond Aerated lagoons Gravity separator having oil skimming devices Trickling filters Biological oxygen pond Aerated lagoons Gravity separator having oil skimming devices Trickling filters ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most severe air pollutant? Hydrocarbons CO SO₂ NOx Hydrocarbons CO SO₂ NOx ANSWER DOWNLOAD EXAMIANS APP
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