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