Environmental Engineering Air binding phenomena in rapid sand filters occur due to Low temperature Excessive negative head Higher turbidity in the effluent Mud ball formation Low temperature Excessive negative head 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 Lime Copper sulphate Sodium permanganate Sulphuric acid Lime Copper sulphate Sodium permanganate Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of oxidation pond is that 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 None of these Large area is required for construction 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 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 Greater than HMD when flowing full Less than HMD when flowing full 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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