Environmental Engineering in CE A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. Hydrogen None of these Ozone Carbon dioxide Hydrogen None of these Ozone Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of potable water should be between 13 to 14 6.5 to 8 1 to 1.5 4 to 5 13 to 14 6.5 to 8 1 to 1.5 4 to 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water treatment, alum[Al2(SO₄)3] is used for the process of Sedimentation Coagulation Filtration Disinfection Sedimentation Coagulation Filtration Disinfection ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The widest explosive limit is of __________ , thereby making it the most explosive gas. Hydrogen Petrol vapor Carbon monoxide Acetylene Hydrogen Petrol vapor Carbon monoxide Acetylene ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a manmade source of air pollution? Forest fire Bacterial action in soil and swamp areas Automobile exhaust All of these Forest fire Bacterial action in soil and swamp areas Automobile exhaust All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Hydrogen ion concentration in distilled water is 10⁻⁷ 7 x 10⁷ 10⁷ 7 x 10⁻⁷ 10⁻⁷ 7 x 10⁷ 10⁷ 7 x 10⁻⁷ ANSWER DOWNLOAD EXAMIANS APP
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