Environmental Engineering in CE BOD of raw municipal sewage may be in the range of about __________ mg/litre. 2000-3000 1-2 150-300 5-10 2000-3000 1-2 150-300 5-10 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE TLV of mercury in potable (drinking) water is about __________ ppm. 0.1 0.001 5 1 0.1 0.001 5 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Oil and grease present in an emulsified state in waste water discharged from industries can be removed by Settling out using chemical reagents Chlorination Skimming off Biological oxidation Settling out using chemical reagents Chlorination Skimming off Biological oxidation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes Reduced strength of textiles Fading of dyes on textiles Corrosion, tarnishing & soiling of metals All of these Reduced strength of textiles Fading of dyes on textiles Corrosion, tarnishing & soiling of metals All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The upper layer of atmosphere is called the Troposphere None of these Stratosphere Ionosphere Troposphere None of these Stratosphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Iron & manganese present in the polluted water is removed by Chemical coagulation Simple filtration Oxidation followed by settling & filtration Chlorination only Chemical coagulation Simple filtration Oxidation followed by settling & filtration Chlorination only ANSWER DOWNLOAD EXAMIANS APP
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