Environmental Engineering Air binding phenomena in rapid sand filters occur due to Excessive negative head Higher turbidity in the effluent Low temperature Mud ball formation Excessive negative head Higher turbidity in the effluent Low temperature Mud ball formation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Lime Sodium permanganate Sulphuric acid Copper sulphate Lime Sodium permanganate Sulphuric acid Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of oxidation pond is that Maintenance and operation cost are high BOD removal is very low Large area is required for construction None of these Maintenance and operation cost are high BOD removal is very low Large area is required for construction None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hydraulic mean depth (HMD) for an egg-shaped sewer flowing two-third full is None of these Less than HMD when flowing full Equal to HMD when flowing full Greater than HMD when flowing full None of these Less than HMD when flowing full Equal to HMD when flowing full Greater than HMD when flowing full ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Settling velocity increases with Depth of tank Size of particles Temperature of liquid Specific gravity of solid particles Depth of tank Size of particles Temperature of liquid Specific gravity of solid particles ANSWER DOWNLOAD EXAMIANS APP
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