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