Environmental Engineering in CE 'Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a 'particulate'? None of these Dust & mists Photochemical smog & soot Smoke & fumes None of these Dust & mists Photochemical smog & soot Smoke & fumes ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur. 1000 3000 (i.e. 0.3%) 50 500 1000 3000 (i.e. 0.3%) 50 500 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of potable water should be between 4 to 5 1 to 1.5 13 to 14 6.5 to 8 4 to 5 1 to 1.5 13 to 14 6.5 to 8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Tolerable limit of nitrogen oxides in air is __________ ppm. 25 5 1 0.1 25 5 1 0.1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a green house gas other than CO₂ ? Chlorofluro carbons (CFC) Nitrous oxide Methane All of these Chlorofluro carbons (CFC) Nitrous oxide Methane All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes Persistent foam Fire hazards Explosion hazards Depletion of dissolved oxygen Persistent foam Fire hazards Explosion hazards Depletion of dissolved oxygen ANSWER DOWNLOAD EXAMIANS APP