Environmental Engineering in CE Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. 100-1000 100-200 10-100 100-1000 100-200 10-100 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. Organic Radioactive None of these Inorganic Organic Radioactive None of these Inorganic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth's surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about __________ °C/km. 6.5 1 0.05 15 6.5 1 0.05 15 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following sources is responsible for maximum air pollution? Photochemical oxidation of organic matter Industrial chimney exhaust Automobiles exhaust Forest fire Photochemical oxidation of organic matter Industrial chimney exhaust Automobiles exhaust Forest fire ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Main pollutant present in automobile exhaust is Hydrocarbons CO NO CO₂ Hydrocarbons CO NO CO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lagooning process is mainly a means of the Sludge disposal Reduction of excessive flow in sewers Biological treatment of wastes None of these Sludge disposal Reduction of excessive flow in sewers Biological treatment of wastes None of these ANSWER DOWNLOAD EXAMIANS APP
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