Environmental Engineering In lime-soda process Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness Only carbonate hardness is removed Only noncarbonated hardness is removed Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness Only carbonate hardness is removed Only noncarbonated hardness is removed Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The overflow rate for plain sedimentation tanks is about 1000 to 1250 liters/hour/ m² 500 to 750 liters/hour/ m² 1500 to 2000 liters/hour/m² 1250 to 1500 liters/hour/m² 1000 to 1250 liters/hour/ m² 500 to 750 liters/hour/ m² 1500 to 2000 liters/hour/m² 1250 to 1500 liters/hour/m² ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of valve, which is provided on the suction pipe in a tube-well, is Sluice valve Pressure relief valve Air relief valve Reflux valve Sluice valve Pressure relief valve Air relief valve Reflux valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank depends on Depth of tank Surface area of tank None of these Both depth and surface area of tank Depth of tank Surface area of tank None of these Both depth and surface area of tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The velocity of flow of water in a sedimentation tank is about 5 to 10 cm/sec 15 to 30 cm/sec 15 to 30 cm/hour 15 to 30 cm/minute 5 to 10 cm/sec 15 to 30 cm/sec 15 to 30 cm/hour 15 to 30 cm/minute ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Air binding phenomena in rapid sand filters occur due to Higher turbidity in the effluent Low temperature Mud ball formation Excessive negative head Higher turbidity in the effluent Low temperature Mud ball formation Excessive negative head ANSWER DOWNLOAD EXAMIANS APP
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