Environmental Engineering in CE Which of the following is not a secondary air pollutant? Sulphur dioxide Ozone Photochemical smog All of these Sulphur dioxide Ozone Photochemical smog All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by Neither A nor B Aerobic oxidation Using the activities of bacteria and other micro organisms Both A & B Neither A nor B Aerobic oxidation Using the activities of bacteria and other micro organisms Both A & B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is Fluctuation in liquid flow Cavitation Boundary layer separation Pipe vibrations Fluctuation in liquid flow Cavitation Boundary layer separation Pipe vibrations ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). 1500 230 750 20 1500 230 750 20 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 'Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a 'particulate'? None of these Dust & mists Smoke & fumes Photochemical smog & soot None of these Dust & mists Smoke & fumes Photochemical smog & soot ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 300 ppm 50 ppm 700 ppm 100 ppm 300 ppm 50 ppm 700 ppm 100 ppm ANSWER DOWNLOAD EXAMIANS APP
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