Environmental Engineering in CE Water filtration rate in a rapid sand filter ranges from __________ kilolitres/m²/hr. 3 to 6 10 to 15 15 to 20 0.1 to 1 3 to 6 10 to 15 15 to 20 0.1 to 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most widely used disinfectant in water treatment? Irradiation of water by ultraviolet light Coagulation Chlorine Cation exchanger Irradiation of water by ultraviolet light Coagulation Chlorine Cation exchanger 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? SO₂ NOx CFC (chloro fluoro carbons) CO SO₂ NOx CFC (chloro fluoro carbons) CO ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is the minimum (about 0.02 ppm). Ozone MIC (methyl iso-cynate) Phosgene Bromine Ozone MIC (methyl iso-cynate) Phosgene Bromine 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. 140 120 200 170 140 120 200 170 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Foul odour and bad taste of water is removed by treating with Copper sulphate Activated carbon Bleaching powder Alum Copper sulphate Activated carbon Bleaching powder Alum ANSWER DOWNLOAD EXAMIANS APP
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