Environmental Engineering The alum, when added as a coagulant in water Does not require alkalinity in water for flocculation Decreases pH value of water Increases pH value of water Does not affect pH value of water Does not require alkalinity in water for flocculation Decreases pH value of water Increases pH value of water Does not affect pH value of water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank depends on Depth of tank None of these Surface area of tank Both depth and surface area of tank Depth of tank None of these Surface area of tank Both depth and surface area of tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of valve which allows water to flow in one direction but prevents its flow in the reverse direction is Air relief valve Pressure relief valve Reflux valve Sluice valve Air relief valve Pressure relief valve Reflux valve Sluice valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Air binding phenomena in rapid sand filters occur due to Excessive negative head Higher turbidity in the effluent Mud ball formation Low temperature Excessive negative head Higher turbidity in the effluent Mud ball formation Low temperature ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following methods of analysis of water distribution system is most suitable for long and narrow pipe system? Electrical analysis method Equivalent pipe method Hardy cross method Circle method Electrical analysis method Equivalent pipe method Hardy cross method Circle method ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The percentage of chlorine in fresh bleaching powder is about 30 to 35 10 to 15 20 to 25 40 to 50 30 to 35 10 to 15 20 to 25 40 to 50 ANSWER DOWNLOAD EXAMIANS APP
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