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 Trickling filters Biological oxygen pond Gravity separator having oil skimming devices Aerated lagoons Trickling filters Biological oxygen pond Gravity separator having oil skimming devices Aerated lagoons ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following plants does not emit appreciable amount of SO₂ in atmosphere? Petroleum refinery Sulphuric acid plant Nitric acid plant Thermal power plant Petroleum refinery Sulphuric acid plant Nitric acid plant Thermal power plant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Growth of __________ is promoted by the presence of manganese in water. Mosquitoes Files Micro-organisms Algae Mosquitoes Files Micro-organisms Algae ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Carbonaceous particles having size less than 1 μm are called Aggregates Smoke Aerosols Grit Aggregates Smoke Aerosols Grit ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called Cesspool Skimming mill Lagoon Septic tank Cesspool Skimming mill Lagoon Septic tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In large thermal power stations very fine particulates present in flue gas are removed by Dust catcher Wet scrubber Electrostatic precipitators Bag filter Dust catcher Wet scrubber Electrostatic precipitators Bag filter ANSWER DOWNLOAD EXAMIANS APP
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