Environmental Engineering in CE Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c. 7 82 19 1 7 82 19 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by Treating in biological oxygen pond Chemical coagulation None of these Chlorination Treating in biological oxygen pond Chemical coagulation None of these Chlorination ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The earth's atmosphere is an envelope of gases present upto a height of about __________ kms. 200 2000 1000 10 200 2000 1000 10 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Smog is not formed due to the presence of __________ in the atmosphere. SO₂ CO₂ Any of these NOx SO₂ CO₂ Any of these NOx ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following sources is responsible for maximum air pollution? Forest fire Industrial chimney exhaust Photochemical oxidation of organic matter Automobiles exhaust Forest fire Industrial chimney exhaust Photochemical oxidation of organic matter Automobiles exhaust ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The disinfection efficiency of chlorine increases by(i) Decreasing the time of contact(ii) Decreasing the temperature of water(iii) Increasing the temperature of water Only (i) Both (i) and (iii) Both (i) and (ii) Only (iii) Only (i) Both (i) and (iii) Both (i) and (ii) Only (iii) ANSWER DOWNLOAD EXAMIANS APP
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