Environmental Engineering in CE Which of the following sources is responsible for maximum air pollution? Photochemical oxidation of organic matter Automobiles exhaust Industrial chimney exhaust Forest fire Photochemical oxidation of organic matter Automobiles exhaust Industrial chimney exhaust Forest fire ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of dissolved impurities of __________ is responsible for the red brownish color of water. Bi-carbonates Iron & manganese Arsenic Carbonates Bi-carbonates Iron & manganese Arsenic Carbonates ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes Blood poisoning Nervous system disorder All of these Anaemia Blood poisoning Nervous system disorder All of these Anaemia ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre)? Biological oxidation pond Lagooning Chemical coagulation Activated carbon adsorption Biological oxidation pond Lagooning Chemical coagulation Activated carbon adsorption ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Scale formation in boiler is controlled by Preheating of feed water Eliminating H₂S in feed water Keeping the pH value of feed water just below 7 Reduction in hardness, silica & alumina in feed water Preheating of feed water Eliminating H₂S in feed water Keeping the pH value of feed water just below 7 Reduction in hardness, silica & alumina in feed water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Direct reaction of unsaturated hydrocarbons with either NO or NO₂ produces an eye irritating pollutant compound known as Peroxy acetyl nitrate (PAN) or methyl nitrile Poly acrylonitrile Photochemical smog Benzopyrene Peroxy acetyl nitrate (PAN) or methyl nitrile Poly acrylonitrile Photochemical smog Benzopyrene ANSWER DOWNLOAD EXAMIANS APP
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