Environmental Engineering in CE Iron & manganese present in the polluted water is removed by Chemical coagulation Chlorination only Oxidation followed by settling & filtration Simple filtration Chemical coagulation Chlorination only Oxidation followed by settling & filtration Simple filtration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank. Sedimentation Both B and C Digestion Filtration Sedimentation Both B and C Digestion Filtration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. Remains constant Decreases May increase or decrease ; depends on the chemical characteristics of polluted water Increases Remains constant Decreases May increase or decrease ; depends on the chemical characteristics of polluted water Increases ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Most efficient and suitable dust removal equipment for removal of flyash from flue gas in a thermal power plant is the Electrostatic precipitator Gravity settling chamber Cyclone separator Bag filter Electrostatic precipitator Gravity settling chamber Cyclone separator Bag filter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the most efficient dust removal equipment for removal of sub-micronic dust particles from blast furnace gas? Hydrocyclone Electrostatic precipitator Packed scrubber Gravity settling chamber Hydrocyclone Electrostatic precipitator Packed scrubber Gravity settling chamber ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level in a quiet private business office is about __________ decibels. 85 25 50 70 85 25 50 70 ANSWER DOWNLOAD EXAMIANS APP
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