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 Photochemical reaction in polluted atmosphere Burning of domestic fuel Automobiles exhaust Industrial chimney exhaust Photochemical reaction in polluted atmosphere Burning of domestic fuel Automobiles exhaust Industrial chimney exhaust ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Death may occur, when SO₂ concentration in atmospheric air exceeds __________ ppm. 400 200 100 20 400 200 100 20 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most detrimental for water used in high pressure boiler? Dissolved oxygen Silica Phenol Turbidity Dissolved oxygen Silica Phenol Turbidity ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases. Increase the dew point of None of these Catalytically convert SO₂ to SO₃ in Reduce SO₂ content in Increase the dew point of None of these Catalytically convert SO₂ to SO₃ in Reduce SO₂ content in ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In sewage treatment, its sedimentation is speeded up by commonly adding Sodium sulphate Lime Copper sulphate Hydrochloric acid Sodium sulphate Lime Copper sulphate Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of __________ in water stream are deleterious to aquatic life. Suspended solids Soluble and toxic organics Heavy metals and cynides All of these Suspended solids Soluble and toxic organics Heavy metals and cynides All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS