Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 300 ppm 100 ppm 700 ppm 50 ppm 300 ppm 100 ppm 700 ppm 50 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following processes is involved in the biochemical treatment of sewage effluents? Fermentation Oxidation Reduction Dehydration Fermentation Oxidation Reduction Dehydration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Particulates (< 1μm size) remaining suspended in air indefinitely and transported by wind currents are called Fumes Aerosols Smoke Mists Fumes Aerosols Smoke Mists 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 Both (i) and (iii) Only (iii) Only (i) Both (i) and (ii) Both (i) and (iii) Only (iii) Only (i) Both (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most detrimental for water used in high pressure boiler? Dissolved oxygen Silica Turbidity Phenol Dissolved oxygen Silica Turbidity Phenol ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Radioactive substances present in the polluted water stream can be removed by Coagulation and filtration Biological oxygen treatment Adsorption in ion exchange materials None of these Coagulation and filtration Biological oxygen treatment Adsorption in ion exchange materials None of these ANSWER DOWNLOAD EXAMIANS APP
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