Environmental Engineering in CE Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? Hydrogen fluoride & nitrogen oxides Sulphur dioxide & spray of weed killers Smog & ozone Carbon monoxide Hydrogen fluoride & nitrogen oxides Sulphur dioxide & spray of weed killers Smog & ozone Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The biological decomposition of organic substances in wastes controlled conditions is called Incineration None of these Biological oxidation Composting Incineration None of these Biological oxidation Composting ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of high concentration of ozone and smog in atmospheric air causes the Damage of electrical insulator on high tension power line Cracking of rubber products Fading of dye on textiles Embrittlement & decrease of folding resistance of paper Damage of electrical insulator on high tension power line Cracking of rubber products Fading of dye on textiles Embrittlement & decrease of folding resistance of paper ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools). 25-30 43961 15-20 43832 25-30 43961 15-20 43832 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 Chemical coagulation Ultrafiltration Centrifugation Floatation & skimming Chemical coagulation Ultrafiltration Centrifugation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels. 85 105 145 125 85 105 145 125 ANSWER DOWNLOAD EXAMIANS APP
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