Environmental Engineering Generally the detention period for grit chambers is kept as 5 minutes 1 minute 24 hours 12 hours 5 minutes 1 minute 24 hours 12 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The maximum efficiency of BOD removal is achieved in Trickling filters Oxidation ditch Aerated lagoons Oxidation pond Trickling filters Oxidation ditch Aerated lagoons Oxidation pond ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The slope of sewer shall be Given in the direction opposite to natural slope of ground Steeper than 1 in 20 Given in the direction of natural slope of ground Zero Given in the direction opposite to natural slope of ground Steeper than 1 in 20 Given in the direction of natural slope of ground Zero ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Period of cleaning of slow sand filters is about 2 - 3 months 1 - 2 year 10 - 12 days 24 - 48 hours 2 - 3 months 1 - 2 year 10 - 12 days 24 - 48 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about 0.5 to 1.0 ppm 0.01 to 0.05 ppm 0.05 to 0.5 ppm 1.0 to 5.0 ppm 0.5 to 1.0 ppm 0.01 to 0.05 ppm 0.05 to 0.5 ppm 1.0 to 5.0 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following sewers is preferred for combined system of sewage? Rectangular sewer None of these Circular sewer Egg shaped sewer Rectangular sewer None of these Circular sewer Egg shaped sewer ANSWER DOWNLOAD EXAMIANS APP
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