Environmental Engineering The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is 10 ppm 4 ppm 1 ppm 40 ppm 10 ppm 4 ppm 1 ppm 40 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The most commonly used sewer under culverts is Semi-elliptical sewer Horseshoe type sewer Circular brick sewer Circular cast iron sewer Semi-elliptical sewer Horseshoe type sewer Circular brick sewer Circular cast iron sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of valve which allows water to flow in one direction but prevents its flow in the reverse direction is Pressure relief valve Air relief valve Reflux valve Sluice valve Pressure relief valve Air relief valve Reflux valve Sluice valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank increases if Particle size is decreased None of these The depth of tank is decreased The surface area of tank is increased Particle size is decreased None of these The depth of tank is decreased The surface area of tank is increased ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Scour valves are provided At every summit of rising mains At the foot of rising main along the slope to prevent back running of water At street corners to control the flow of water At every depression and dead ends to drain out the waste water that may collect there At every summit of rising mains At the foot of rising main along the slope to prevent back running of water At street corners to control the flow of water At every depression and dead ends to drain out the waste water that may collect there ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following values of pH represents a stronger acid? 3 5 4 2 3 5 4 2 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS