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 Sluice valve Pressure relief valve Reflux valve Air relief valve Sluice valve Pressure relief valve Reflux valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering On standard silica scale, the turbidity in drinking water should be limited to 20 ppm 50 ppm 30 ppm 10 ppm 20 ppm 50 ppm 30 ppm 10 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The length of rectangular sedimentation tank should not be more than (Where ‘B’ is the width of the tank) 4B B 8B 2B 4B B 8B 2B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is 40 ppm 10 ppm 4 ppm 1 ppm 40 ppm 10 ppm 4 ppm 1 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following compounds is widely used for algae control? Copper sulphate Sodium chloride Sodium sulphate Calcium chloride Copper sulphate Sodium chloride Sodium sulphate Calcium chloride ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank depends on Depth of tank Both depth and surface area of tank None of these Surface area of tank Depth of tank Both depth and surface area of tank None of these Surface area of tank ANSWER DOWNLOAD EXAMIANS APP
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