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 Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. Coal ash Ortho-xylene Potassium cyanide None of these Coal ash Ortho-xylene Potassium cyanide None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Carbon monoxide is a pollutant, which causes Respiratory disease (e.g. asthma) Retardation in crop growth Damage to building materials like marble Asphyxiation (suffocation) leading to death Respiratory disease (e.g. asthma) Retardation in crop growth Damage to building materials like marble Asphyxiation (suffocation) leading to death ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Main pollutant present in automobile exhaust is CO₂ Hydrocarbons CO NO CO₂ Hydrocarbons CO NO ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Septic tank is a(i) Settling tank(ii) Digestion tank(iii) Aeration tank Only (i) Only (iii) (i) and (ii) (i) and (iii) Only (i) Only (iii) (i) and (ii) (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Most efficient and suitable dust removal equipment for removal of flyash from flue gas in a thermal power plant is the Cyclone separator Electrostatic precipitator Gravity settling chamber Bag filter Cyclone separator Electrostatic precipitator Gravity settling chamber Bag filter ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS