Environmental Engineering The overflow rate for plain sedimentation tanks is about 1500 to 2000 liters/hour/m² 1250 to 1500 liters/hour/m² 500 to 750 liters/hour/ m² 1000 to 1250 liters/hour/ m² 1500 to 2000 liters/hour/m² 1250 to 1500 liters/hour/m² 500 to 750 liters/hour/ m² 1000 to 1250 liters/hour/ m² ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The slope of sewer shall be 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 Given in the direction opposite to natural slope of ground ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as 8.5 to 10.0 4.5 to 6.0 6.5 to 8.0 10.5 to 12.0 8.5 to 10.0 4.5 to 6.0 6.5 to 8.0 10.5 to 12.0 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If Biochemical oxygen demand (BOD) of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is 4,00,000 1,00,000 4000 1000 4,00,000 1,00,000 4000 1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Lime Sulphuric acid Sodium permanganate Copper sulphate Lime Sulphuric acid Sodium permanganate Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about 1.0 to 5.0 ppm 0.5 to 1.0 ppm 0.05 to 0.5 ppm 0.01 to 0.05 ppm 1.0 to 5.0 ppm 0.5 to 1.0 ppm 0.05 to 0.5 ppm 0.01 to 0.05 ppm ANSWER DOWNLOAD EXAMIANS APP
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