Environmental Engineering in CE Tolerable limit of nitrogen oxides in air is __________ ppm. 0.1 1 5 25 0.1 1 5 25 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE When the concentration of SO₂ in air is greater than __________ ppm, it gives a pungent smell. 0.1 4 1 0.01 0.1 4 1 0.01 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The common pollutant generated in chlor-alkali industry and battery manufacture is Mercury Phosphate None of these Brine Mercury Phosphate None of these Brine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The biological decomposition of organic substances in wastes controlled conditions is called Composting None of these Incineration Biological oxidation Composting None of these Incineration Biological oxidation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In sewage treatment, its sedimentation is speeded up by commonly adding Hydrochloric acid Sodium sulphate Lime Copper sulphate Hydrochloric acid Sodium sulphate Lime Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur. 500 50 1000 3000 (i.e. 0.3%) 500 50 1000 3000 (i.e. 0.3%) ANSWER DOWNLOAD EXAMIANS APP
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