Environmental Engineering in CE Reingleman chart No. 2 corresponds to __________ percent black smoke. 40 20 10 80 40 20 10 80 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lagoons used for purification of polluted water Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre Use micro-organisms/bacteria in presence of dissolved oxygen All of these Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre Use micro-organisms/bacteria in presence of dissolved oxygen All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following pollutants is absent in the emissions from a fertiliser plant ? SO₂ & SO₃ CO NH₃ NO₂ SO₂ & SO₃ CO NH₃ NO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Persons working in cement plants and limestone quarries are more prone to disease like Asthma Flourosis (bone disease) Cancer Silicosis Asthma Flourosis (bone disease) Cancer Silicosis ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters? Ra-226 Au-198 I-131 Sr-90 Ra-226 Au-198 I-131 Sr-90 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. 5 500 50 1 5 500 50 1 ANSWER DOWNLOAD EXAMIANS APP
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