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 All of these Gastritis & diarrhea Paralysis of muscles & loss of appetite Nervous depression All of these Gastritis & diarrhea Paralysis of muscles & loss of appetite ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. 1 500 5 50 1 500 5 50 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Iron & manganese present in the polluted water is removed by Chemical coagulation Chlorination only Simple filtration Oxidation followed by settling & filtration Chemical coagulation Chlorination only Simple filtration Oxidation followed by settling & filtration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fresh sewage is __________ in nature. Highly acidic Acidic Neutral Alkaline Highly acidic Acidic Neutral Alkaline ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a manmade source of air pollution? All of these Forest fire Automobile exhaust Bacterial action in soil and swamp areas All of these Forest fire Automobile exhaust Bacterial action in soil and swamp areas ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most lethal water pollutant? Suspended solids Chlorine Phenol and cynide Alkalis Suspended solids Chlorine Phenol and cynide Alkalis ANSWER DOWNLOAD EXAMIANS APP
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