Environmental Engineering in CE Aerobic biological oxidation ponds used for the purification of polluted water All of these Destroys/removes pathogen from the sewage Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents Destroys/removes pathogen much more effectively if the sewage is chlorinated All of these Destroys/removes pathogen from the sewage Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents Destroys/removes pathogen much more effectively if the sewage is chlorinated ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not a source of ozone emission in the atmosphere? Dermatological photo-therapy equipments Xerox machines High voltage electrical equipments Refrigerators Dermatological photo-therapy equipments Xerox machines High voltage electrical equipments Refrigerators ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fresh domestic sewage is __________ in color. Grey Red Black Dark brown Grey Red Black Dark brown 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 CO NOx CFC (chloro fluoro carbons) SO₂ CO NOx CFC (chloro fluoro carbons) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a secondary air pollutant? Nitrogen dioxide Dust particles Photochemical smog Sulphur dioxide Nitrogen dioxide Dust particles Photochemical smog Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water chemical treatment plant, use of chloramines ensures Disinfection Weed control in reservoirs Taste & odour control Removal of permanent hardness Disinfection Weed control in reservoirs Taste & odour control Removal of permanent hardness ANSWER DOWNLOAD EXAMIANS APP
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