Environmental Engineering in CE Which of the following pollutants is not emitted during volcanic eruptions? CO H₂S Hydrocarbons SO₂ CO H₂S Hydrocarbons SO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE BOD of raw municipal sewage may be in the range of about __________ mg/litre. 1-2 5-10 2000-3000 150-300 1-2 5-10 2000-3000 150-300 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Polluted water having low BOD are most economically treated in Sedimentation tanks Oxidation ponds Sludge digester Clarifier Sedimentation tanks Oxidation ponds Sludge digester Clarifier ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 100 ppm 50 ppm 300 ppm 700 ppm 100 ppm 50 ppm 300 ppm 700 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan Neither A nor B With greater number of blades Of increased diameter Both A & B Neither A nor B With greater number of blades Of increased diameter Both A & B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A shallow pond in which the sewage is retained and biologically treated is called Oxidation Imhoff tank Skimming tank Lagoon Oxidation Imhoff tank Skimming tank Lagoon ANSWER DOWNLOAD EXAMIANS APP
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