Environmental Engineering in CE High noise levels produced during operation of fans and compressors can be reduced by using Lagging of noisy duct None of these Accoustical absorbent Mufflers (silencers) Lagging of noisy duct None of these Accoustical absorbent Mufflers (silencers) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of __________ bacteria in water causes disease like typhoid. Pathogenic Non-pathogenic Anaerobic Aerobic Pathogenic Non-pathogenic Anaerobic Aerobic 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. May increase or decrease ; depends on the chemical characteristics of polluted water Increases Decreases Remains constant May increase or decrease ; depends on the chemical characteristics of polluted water Increases Decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is maximum (about 500 ppm). Toluene Carbon dioxide Acetaldehyde Carbon disulphide Toluene Carbon dioxide Acetaldehyde Carbon disulphide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fluorosis is caused due to the presence of excessive amount of __________ in drinking water. Fluoride Arsenic Mercury Lead Fluoride Arsenic Mercury Lead ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 50 ppm 100 ppm 700 ppm 300 ppm 50 ppm 100 ppm 700 ppm 300 ppm ANSWER DOWNLOAD EXAMIANS APP
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