Environmental Engineering The velocity of flow of water in a sedimentation tank is about 5 to 10 cm/sec 15 to 30 cm/minute 15 to 30 cm/sec 15 to 30 cm/hour 5 to 10 cm/sec 15 to 30 cm/minute 15 to 30 cm/sec 15 to 30 cm/hour ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The process of lagooning is primarily a means of Increasing flow of sewage through imhoff tanks Reducing the excessive flow in sewers Increasing the capacity of storage reservoirs Disposing of sludge Increasing flow of sewage through imhoff tanks Reducing the excessive flow in sewers Increasing the capacity of storage reservoirs Disposing of sludge ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Select the correct relationship between porosity (N), specific yield (y) and specific retention (R) R > (N + y) y = N + R N = y + R R = N + y R > (N + y) y = N + R N = y + R R = N + y ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The alum, when added as a coagulant in water Increases pH value of water Decreases pH value of water Does not require alkalinity in water for flocculation Does not affect pH value of water Increases pH value of water Decreases pH value of water Does not require alkalinity in water for flocculation Does not affect pH value of water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The slope of sewer shall be Given in the direction opposite to natural slope of ground Given in the direction of natural slope of ground Steeper than 1 in 20 Zero Given in the direction opposite to natural slope of ground Given in the direction of natural slope of ground Steeper than 1 in 20 Zero ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In lime-soda process Only noncarbonated hardness is removed Only carbonate 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 noncarbonated hardness is removed Only carbonate 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 ANSWER DOWNLOAD EXAMIANS APP
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