Environmental Engineering The detention period for oxidation ponds is usually kept as 48 hours 24 hours 10 to 15 days 3 months 48 hours 24 hours 10 to 15 days 3 months ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as 10.5 to 12.0 6.5 to 8.0 4.5 to 6.0 8.5 to 10.0 10.5 to 12.0 6.5 to 8.0 4.5 to 6.0 8.5 to 10.0 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank increases if The depth of tank is decreased The surface area of tank is increased Particle size is decreased None of these The depth of tank is decreased The surface area of tank is increased Particle size is decreased None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of valve, which is provided on the suction pipe in a tube-well, is Pressure relief valve Air relief valve Reflux valve Sluice valve Pressure relief valve Air relief valve Reflux valve Sluice valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of sewer which is suitable for both combined and separate system is Semi-elliptical sewer Egg shaped sewer Circular sewer Horseshoe type sewer Semi-elliptical sewer Egg shaped sewer Circular sewer Horseshoe type sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the Turbidity in water Hardness in water Dissolved oxygen in water Residual chlorine in water Turbidity in water Hardness in water Dissolved oxygen in water Residual chlorine in water ANSWER DOWNLOAD EXAMIANS APP
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