Environmental Engineering in CE Out of the following, TLV of __________ is the minimum (about 0.02 ppm). Ozone Bromine Phosgene MIC (methyl iso-cynate) Ozone Bromine Phosgene MIC (methyl iso-cynate) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Cleaning is done by(i) Scraping and removal in filters slow sand(ii) Back washing in slow sand filters(iii) Scraping and removal in filters rapid sand(iv) Back washing in rapid sand filtersThe correct answer is (i) and (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In sewage treatment, its sedimentation is speeded up by commonly adding Lime Sodium sulphate Copper sulphate Hydrochloric acid Lime Sodium sulphate Copper sulphate Hydrochloric acid 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 Destroys/removes pathogen from the sewage All of these Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents Destroys/removes pathogen much more effectively if the sewage is chlorinated Destroys/removes pathogen from the sewage All of these Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by Aerated lagoons Biological oxygen pond Gravity separator having oil skimming devices Trickling filters Aerated lagoons Biological oxygen pond Gravity separator having oil skimming devices Trickling filters ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Acute danger to human life (i.e. death) exists, if the concentration of CO₂ in atmospheric air exceeds __________ percent (by volume). 20 1 3 7 20 1 3 7 ANSWER DOWNLOAD EXAMIANS APP
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