Environmental Engineering in CE In sewage treatment, its sedimentation is speeded up by commonly adding Hydrochloric acid Sodium sulphate Copper sulphate Lime Hydrochloric acid Sodium sulphate Copper sulphate Lime ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants? Hg F NOx SO₂ Hg F NOx SO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million). 2000 1000 50 5000 2000 1000 50 5000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water. Turbidity All of these Total solids Color (Hazen) Turbidity All of these Total solids Color (Hazen) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following fine dust removal equipments is the most efficient? Electrostatic precipitator Bag filter Scrubber Cyclone separator Electrostatic precipitator Bag filter Scrubber Cyclone separator 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 Trickling filters Aerated lagoons Gravity separator having oil skimming devices Biological oxygen pond Trickling filters Aerated lagoons Gravity separator having oil skimming devices ANSWER DOWNLOAD EXAMIANS APP
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