Environmental Engineering in CE Iron & manganese present in the polluted water is removed by Oxidation followed by settling & filtration Simple filtration Chemical coagulation Chlorination only Oxidation followed by settling & filtration Simple filtration Chemical coagulation Chlorination only ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Siderosis is a disease caused by the inhalation of __________ dust. Silica Coal None of these Iron Silica Coal None of these Iron ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Death may occur, when SO₂ concentration in atmospheric air exceeds __________ ppm. 400 200 20 100 400 200 20 100 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The widest explosive limit is of __________ , thereby making it the most explosive gas. Carbon monoxide Acetylene Petrol vapor Hydrogen Carbon monoxide Acetylene Petrol vapor Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 100 ppm 50 ppm 700 ppm 300 ppm 100 ppm 50 ppm 700 ppm 300 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is the minimum (about 0.02 ppm). Bromine Ozone MIC (methyl iso-cynate) Phosgene Bromine Ozone MIC (methyl iso-cynate) Phosgene ANSWER DOWNLOAD EXAMIANS APP
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