Environmental Engineering in CE Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of Chlorine or its compounds Ultraviolet light for irradiation of water All of these Ozone and iodine Chlorine or its compounds Ultraviolet light for irradiation of water All of these Ozone and iodine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The length of rectangular sedimentation tank should not be more than(Where ‘B’ is the width of the tank) B 8B 4B 2B B 8B 4B 2B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N₂ in contaminated air at which it acts as a natural asphyxant is ≥ __________ percent. 80 88 84 92 80 88 84 92 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of soluble organics in polluted water causes Explosion hazards Undesirable plants growth Depletion of oxygen Fire hazards Explosion hazards Undesirable plants growth Depletion of oxygen Fire hazards ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of bacteria in potable (drinking) water causes Disease Bad odour Turbidity Bad taste & colour Disease Bad odour Turbidity Bad taste & colour ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes Nervous depression Paralysis of muscles & loss of appetite All of these Gastritis & diarrhea Nervous depression Paralysis of muscles & loss of appetite All of these Gastritis & diarrhea ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS