Environmental Engineering in CE COD of raw municipal sewage may be in the range of about __________ mg/litre. 90-120 5-10 1-2 1500-2500 90-120 5-10 1-2 1500-2500 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The term Biological Oxygen Demand (BOD) is used in relation to Industrial effluents Potable water Distilled water Cooling water Industrial effluents Potable water Distilled water Cooling water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lagoons used for purification of polluted water Use micro-organisms/bacteria in presence of dissolved oxygen All of these Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds Use micro-organisms/bacteria in presence of dissolved oxygen All of these Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Thermal pollution due to excessive heat & temperature in the working place causes High breathing rate Reduction in working efficiency of manpower All of these Fatigue High breathing rate Reduction in working efficiency of manpower All of these Fatigue ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE High concentration of carcinogenic hydrocarbon pollutants in atmospheric air causes Silicosis Cancer Reduced crop yield Respiratory disease (e.g., asthma) Silicosis Cancer Reduced crop yield Respiratory disease (e.g., asthma) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a green house gas other than CO₂ ? All of these Chlorofluro carbons (CFC) Methane Nitrous oxide All of these Chlorofluro carbons (CFC) Methane Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
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