Environmental Engineering in CE In large thermal power stations very fine particulates present in flue gas are removed by Wet scrubber Bag filter Electrostatic precipitators Dust catcher Wet scrubber Bag filter Electrostatic precipitators Dust catcher ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the most efficient dust removal equipment for removal of sub-micronic dust particles from blast furnace gas? Electrostatic precipitator Packed scrubber Hydrocyclone Gravity settling chamber Electrostatic precipitator Packed scrubber Hydrocyclone Gravity settling chamber ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by Aerobic oxidation Neither A nor B Using the activities of bacteria and other micro organisms Both A & B Aerobic oxidation Neither A nor B Using the activities of bacteria and other micro organisms Both A & B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones. 10² 10⁹ 10¹⁵ 10⁵ 10² 10⁹ 10¹⁵ 10⁵ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is Diluted with fresh water to reduce its acidity Left as such without any treatment Neutralised by alkali treatment None of these Diluted with fresh water to reduce its acidity Left as such without any treatment Neutralised by alkali treatment None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Main pollutants released from petroleum refineries is SO₃, NO₂ & CO₂ CO₂, H₂S & NO₂ CO₂, NO & SO₃ CO, SO₂ & H₂S SO₃, NO₂ & CO₂ CO₂, H₂S & NO₂ CO₂, NO & SO₃ CO, SO₂ & H₂S ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS