Environmental Engineering in CE Exposure to chemicals having carcinogenic properties cause Asthma Dermatitis (skin disorder) Cancer Asphyxiation (suffocation) Asthma Dermatitis (skin disorder) Cancer Asphyxiation (suffocation) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate? SO₂ CFC (chloro fluoro carbons) NOx CO SO₂ CFC (chloro fluoro carbons) NOx CO ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The disinfection efficiency of chlorine increases by(i) Decreasing the time of contact(ii) Decreasing the temperature of water(iii) Increasing the temperature of water Only (iii) Both (i) and (ii) Both (i) and (iii) Only (i) Only (iii) Both (i) and (ii) Both (i) and (iii) Only (i) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Operating principle of cyclone separator is based on the action of __________ dust particles. Centrifugal force on Electrostatic force on Gravitational force on Diffusion of Centrifugal force on Electrostatic force on Gravitational force on Diffusion of ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes Poor visibility due to sky darkening All of these Respiratory trouble Irritation in eyes Poor visibility due to sky darkening All of these Respiratory trouble Irritation in eyes ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream? Chemical coagulation Sedimentation tank Circular clarifier Mechanical flocculation Chemical coagulation Sedimentation tank Circular clarifier Mechanical flocculation ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS