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 (ii) Only (i) Both (i) and (iii) Only (iii) Both (i) and (ii) Only (i) Both (i) and (iii) Only (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fresh sewage is __________ in nature. Alkaline Highly acidic Neutral Acidic Alkaline Highly acidic Neutral Acidic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most detrimental for water used in high pressure boiler? Phenol Silica Turbidity Dissolved oxygen Phenol Silica Turbidity Dissolved oxygen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not a natural source of air pollution? Photochemical oxidation of organic matter Volcanic eruptions and lightening discharges None of these Biological decay of vegetable matter Photochemical oxidation of organic matter Volcanic eruptions and lightening discharges None of these Biological decay of vegetable matter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of __________ bacteria in water causes disease like typhoid. Pathogenic Non-pathogenic Aerobic Anaerobic Pathogenic Non-pathogenic Aerobic Anaerobic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not an air pollutant? Pesticides Carcinogens Metallic powders Ozone Pesticides Carcinogens Metallic powders Ozone ANSWER DOWNLOAD EXAMIANS APP
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