Environmental Engineering in CE Which of the following is not a secondary air pollutant? Ozone Sulphur dioxide Photochemical smog All of these Ozone Sulphur dioxide Photochemical smog All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas? Carbon monoxide Acetylene Hydrogen Ammonia Carbon monoxide Acetylene Hydrogen Ammonia ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million). 2000 5000 50 1000 2000 5000 50 1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The concentration of water vapour in troposphere, which depends upon the altitude & temperature varies in the range of zero to __________ percent. 12 4 1 8 12 4 1 8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases. Catalytically convert SO₂ to SO₃ in Increase the dew point of None of these Reduce SO₂ content in Catalytically convert SO₂ to SO₃ in Increase the dew point of None of these Reduce SO₂ content in ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Water filtration rate in a rapid sand filter ranges from __________ kilolitres/m²/hr. 3 to 6 10 to 15 0.1 to 1 15 to 20 3 to 6 10 to 15 0.1 to 1 15 to 20 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS