Environmental Engineering in CE Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm). Extremely Very extremely Moderately Highly Extremely Very extremely Moderately Highly ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? Sulphur dioxide & spray of weed killers Smog & ozone Carbon monoxide Hydrogen fluoride & nitrogen oxides Sulphur dioxide & spray of weed killers Smog & ozone Carbon monoxide Hydrogen fluoride & nitrogen oxides ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the Troposphere None of these Stratosphere Ionosphere Troposphere None of these Stratosphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level during normal conversation among men is about __________ decibles. 10 45 115 90 10 45 115 90 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 Burning of domestic fuel Industrial chimney exhaust Photochemical reaction in polluted atmosphere Automobiles exhaust Burning of domestic fuel Industrial chimney exhaust Photochemical reaction in polluted atmosphere Automobiles exhaust ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most major constituents of air pollutants? Hydrogen sulphide Oxides of nitrogen Carbon monoxide Oxides of sulphur Hydrogen sulphide Oxides of nitrogen Carbon monoxide Oxides of sulphur ANSWER DOWNLOAD EXAMIANS APP
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