Environmental Engineering For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as 8.5 to 10.0 6.5 to 8.0 4.5 to 6.0 10.5 to 12.0 8.5 to 10.0 6.5 to 8.0 4.5 to 6.0 10.5 to 12.0 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In facultative stabilization pond, the sewage is treated by Dual action of aerobic bacteria and anaerobic bacteria Aerobic bacteria only Sedimentation Algae only Dual action of aerobic bacteria and anaerobic bacteria Aerobic bacteria only Sedimentation Algae only ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of cement concrete sewers is Less life Less strength Difficulty in construction Difficulty in transportation due to heavy weight Less life Less strength Difficulty in construction Difficulty in transportation due to heavy weight ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following retards the self purification of stream? Higher temperature None of these Satisfying oxygen demand Sunlight Higher temperature None of these Satisfying oxygen demand Sunlight ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The ratio of 5 day BOD to ultimate BOD is about 1 43894 43833 43864 1 43894 43833 43864 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The most commonly used sewer under culverts is Circular cast iron sewer Semi-elliptical sewer Circular brick sewer Horseshoe type sewer Circular cast iron sewer Semi-elliptical sewer Circular brick sewer Horseshoe type sewer ANSWER DOWNLOAD EXAMIANS APP
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