Environmental Engineering The most commonly used sewer under culverts is Semi-elliptical sewer Circular cast iron sewer Circular brick sewer Horseshoe type sewer Semi-elliptical sewer Circular cast iron sewer Circular brick sewer Horseshoe type sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally Less and more Less and less More and less More and more Less and more Less and less More and less More and more ANSWER DOWNLOAD EXAMIANS APP
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 Copper sulphate Lime Sodium permanganate Sulphuric acid Copper sulphate Lime Sodium permanganate Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Settling velocity increases with Specific gravity of solid particles Size of particles Temperature of liquid Depth of tank Specific gravity of solid particles Size of particles Temperature of liquid Depth of tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Generally the detention period for grit chambers is kept as 5 minutes 1 minute 12 hours 24 hours 5 minutes 1 minute 12 hours 24 hours ANSWER DOWNLOAD EXAMIANS APP
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