Environmental Engineering in CE The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). 1500 20 230 750 1500 20 230 750 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE When the concentration of SO₂ in air is greater than __________ ppm, it gives a pungent smell. 1 0.01 0.1 4 1 0.01 0.1 4 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is maximum (about 500 ppm). Carbon dioxide Carbon disulphide Toluene Acetaldehyde Carbon dioxide Carbon disulphide Toluene Acetaldehyde ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Inhalation of silica dust causes a disease called Pneumoconiosis Bronchitis None of these Silicosis Pneumoconiosis Bronchitis None of these Silicosis ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 'Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the Photochemical reaction in polluted atmosphere Burning of domestic fuel Industrial chimney exhaust Automobiles exhaust Photochemical reaction in polluted atmosphere Burning of domestic fuel Industrial chimney exhaust Automobiles exhaust ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 'Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a 'particulate'? Photochemical smog & soot Dust & mists None of these Smoke & fumes Photochemical smog & soot Dust & mists None of these Smoke & fumes ANSWER DOWNLOAD EXAMIANS APP