Environmental Engineering in CE TLV of mercury in potable (drinking) water is about __________ ppm. 5 1 0.001 0.1 5 1 0.001 0.1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called Thermosphere Troposphere Stratosphere Mesosphere Thermosphere Troposphere Stratosphere Mesosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Aerobic biological oxidation ponds used for the purification of polluted water Destroys/removes pathogen from the sewage Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents All of these Destroys/removes pathogen much more effectively if the sewage is chlorinated Destroys/removes pathogen from the sewage Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents All of these Destroys/removes pathogen much more effectively if the sewage is chlorinated 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 Aerated lagoons Trickling filters Gravity separator having oil skimming devices Biological oxygen pond Aerated lagoons Trickling filters Gravity separator having oil skimming devices Biological oxygen pond ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate? NOx SO₂ CFC (chloro fluoro carbons) CO NOx SO₂ CFC (chloro fluoro carbons) CO ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels. 170 120 200 140 170 120 200 140 ANSWER DOWNLOAD EXAMIANS APP
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