Environmental Engineering in CE High noise levels produced during operation of fans and compressors can be reduced by using Accoustical absorbent Lagging of noisy duct None of these Mufflers (silencers) Accoustical absorbent Lagging of noisy duct None of these Mufflers (silencers) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fine grit present in sewage is removed in the __________ during sewage treatment. Grit chamber Trickling filter Skimming tank Detritus tank Grit chamber Trickling filter Skimming tank Detritus tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Shouting by a man at his full voice corresponds to a voice level of about __________ decibels. 25 50 120 80 25 50 120 80 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Thermal pollution due to excessive heat & temperature in the working place causes Reduction in working efficiency of manpower All of these Fatigue High breathing rate Reduction in working efficiency of manpower All of these Fatigue High breathing rate 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 All of these Paralysis of muscles & loss of appetite Nervous depression Gastritis & diarrhea All of these Paralysis of muscles & loss of appetite Nervous depression Gastritis & diarrhea ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. Ozone Carbon dioxide Hydrogen None of these Ozone Carbon dioxide Hydrogen None of these ANSWER DOWNLOAD EXAMIANS APP
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