Environmental Engineering If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be 10 mm/hr 4 mm/hr 20 mm/hr 40 mm/hr 10 mm/hr 4 mm/hr 20 mm/hr 40 mm/hr ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Average rate of water consumption per head per day as per Indian Standard is 200 liters 100 liters 135 liters 165 liters 200 liters 100 liters 135 liters 165 liters ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For a given discharge, the efficiency of sedimentation tank can be increased by Increasing the surface area of tank Decreasing the depth of tank Increasing the depth of tank Decreasing the surface area of tank Increasing the surface area of tank Decreasing the depth of tank Increasing the depth of tank Decreasing the surface area of tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Corrosion in concrete sewers is caused by Chlorine Dissolved oxygen Septic conditions Nitrogen Chlorine Dissolved oxygen Septic conditions Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The alum, when added as a coagulant in water Increases pH value of water Does not require alkalinity in water for flocculation Decreases pH value of water Does not affect pH value of water Increases pH value of water Does not require alkalinity in water for flocculation Decreases pH value of water Does not affect pH value of water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The maximum efficiency of BOD removal is achieved in Oxidation pond Aerated lagoons Oxidation ditch Trickling filters Oxidation pond Aerated lagoons Oxidation ditch Trickling filters ANSWER DOWNLOAD EXAMIANS APP
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