Environmental Engineering in CE Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? Carbon monoxide Sulphur dioxide & spray of weed killers Hydrogen fluoride & nitrogen oxides Smog & ozone Carbon monoxide Sulphur dioxide & spray of weed killers Hydrogen fluoride & nitrogen oxides Smog & ozone ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. Potassium cyanide Ortho-xylene None of these Coal ash Potassium cyanide Ortho-xylene None of these Coal ash ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level inside a jet air liner in normal flight is about __________ decibels. 125 100 145 80 125 100 145 80 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of dissolved impurities of __________ is responsible for the red brownish color of water. Iron & manganese Arsenic Bi-carbonates Carbonates Iron & manganese Arsenic Bi-carbonates Carbonates ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by Natural aeration of water stream Both A & B Neither A nor B Photosynthetic action of algae Natural aeration of water stream Both A & B Neither A nor B Photosynthetic action of algae ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water treatment, alum[Al2(SO₄)3] is used for the process of Coagulation Disinfection Filtration Sedimentation Coagulation Disinfection Filtration Sedimentation ANSWER DOWNLOAD EXAMIANS APP
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