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