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 Aerated lagoons Gravity separator having oil skimming devices Biological oxygen pond Trickling filters Aerated lagoons Gravity separator having oil skimming devices Biological oxygen pond Trickling filters ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by Filtration Biological oxygen pond Lagoons Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) Filtration Biological oxygen pond Lagoons Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Salt content in sea water is about __________ percent. 3.5 0.5 1 10 3.5 0.5 1 10 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Removal of __________ results from the disinfection of water. Turbidity Hardness Bacteria Odour Turbidity Hardness Bacteria Odour ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The Killer gas which caused Bhopal gas tragedy in 1984 was Phosgene Methyl iso-cynate (MIC) Carbon monoxide Sulphur dioxide Phosgene Methyl iso-cynate (MIC) Carbon monoxide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Exposure to small amount of __________ results in high blood pressure & heart disease in human beings. Hydrogen sulphide Cadmium Asbestos Mercury Hydrogen sulphide Cadmium Asbestos Mercury ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS