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 Biological oxygen pond Aerated lagoons Trickling filters Gravity separator having oil skimming devices Biological oxygen pond Aerated lagoons Trickling filters Gravity separator having oil skimming devices ANSWER DOWNLOAD EXAMIANS APP
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 Which is the most widely used coagulant for the treatment of turbid water? Ferric chloride Sodium aluminate Lime Alum (aluminium sulphate) Ferric chloride Sodium aluminate Lime Alum (aluminium sulphate) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE BOD of raw municipal sewage may be in the range of about __________ mg/litre. 1-2 5-10 150-300 2000-3000 1-2 5-10 150-300 2000-3000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Salt content in sea water is about __________ percent. 10 1 3.5 0.5 10 1 3.5 0.5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Smoke is produced due to Insufficient supply of combustion air and insufficient time for combustion Poor quality of fuel and improper mixing of fuel & combustion air All of these Poor design & overloading of furnace Insufficient supply of combustion air and insufficient time for combustion Poor quality of fuel and improper mixing of fuel & combustion air All of these Poor design & overloading of furnace ANSWER DOWNLOAD EXAMIANS APP
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