Environmental Engineering in CE The main type of sludge gas evolved during sewage treatment in Imhoff tank is CH₄ CO₂ H₂ CO CH₄ CO₂ H₂ CO 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. 10¹⁵ 10² 10⁹ 10⁵ 10¹⁵ 10² 10⁹ 10⁵ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following sources is responsible for maximum air pollution? Photochemical oxidation of organic matter Forest fire Industrial chimney exhaust Automobiles exhaust Photochemical oxidation of organic matter Forest fire Industrial chimney exhaust Automobiles exhaust ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Smog is Nothing but black smoke A liquid particle resulting from vapor condensation A solid particle e.g. flyash A combination of smoke and fog Nothing but black smoke A liquid particle resulting from vapor condensation A solid particle e.g. flyash A combination of smoke and fog ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Aerobic biological oxidation ponds used for the purification of polluted water 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 All of these Destroys/removes pathogen from the sewage Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the Global warming Atmospheric effect Green house Ionosphere Global warming Atmospheric effect Green house Ionosphere ANSWER DOWNLOAD EXAMIANS APP
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