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? Circular clarifier Sedimentation tank Chemical coagulation Mechanical flocculation Circular clarifier Sedimentation tank Chemical coagulation Mechanical flocculation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not a secondary air pollutant? Sulphur dioxide Photochemical smog Ozone All of these Sulphur dioxide Photochemical smog Ozone All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Radioactive substances present in the polluted water stream can be removed by Coagulation and filtration Adsorption in ion exchange materials None of these Biological oxygen treatment Coagulation and filtration Adsorption in ion exchange materials None of these Biological oxygen treatment ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most lethal water pollutant? Chlorine Suspended solids Phenol and cynide Alkalis Chlorine Suspended solids Phenol and cynide Alkalis ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Global warming may result in All of these Flood Cyclone Decrease in food productivity All of these Flood Cyclone Decrease in food productivity ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in Coagulation and flocculation of colloids All of these Nitrification or oxidation of ammonia derived from breakdown of nitrogeneous organic matter to the nitrite and eventually to the nitrate Oxidation of carbonaceous matter to CO₂ Coagulation and flocculation of colloids All of these Nitrification or oxidation of ammonia derived from breakdown of nitrogeneous organic matter to the nitrite and eventually to the nitrate Oxidation of carbonaceous matter to CO₂ ANSWER DOWNLOAD EXAMIANS APP
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