Environmental Engineering in CE Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases. Catalytically convert SO₂ to SO₃ in Increase the dew point of Reduce SO₂ content in None of these Catalytically convert SO₂ to SO₃ in Increase the dew point of Reduce SO₂ content in None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not a natural source of air pollution? Volcanic eruptions and lightening discharges Photochemical oxidation of organic matter Biological decay of vegetable matter None of these Volcanic eruptions and lightening discharges Photochemical oxidation of organic matter Biological decay of vegetable matter None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Most of the atmospheric air pollutants are present in large quantity in Thermosphere Trophosphere Mesosphere Stratosphere Thermosphere Trophosphere Mesosphere Stratosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. Ozone Hydrogen None of these Carbon dioxide Ozone Hydrogen None of these Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Cleaning is done by(i) Scraping and removal in filters slow sand(ii) Back washing in slow sand filters(iii) Scraping and removal in filters rapid sand(iv) Back washing in rapid sand filtersThe correct answer is (ii) and (iv) (ii) and (iii) (i) and (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (ii) (i) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by Floatation & skimming Ultrafiltration Chemical coagulation Centrifugation Floatation & skimming Ultrafiltration Chemical coagulation Centrifugation ANSWER DOWNLOAD EXAMIANS APP
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