Environmental Engineering The velocity of flow does not depend on Grade of sewer Length of sewer Roughness of sewer Hydraulic mean depth of sewer Grade of sewer Length of sewer Roughness of sewer Hydraulic mean depth of sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to Non carbonate hardness Total hardness Total alkalinity Total hardness total alkalinity Non carbonate hardness Total hardness Total alkalinity Total hardness total alkalinity 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) B 4B 2B 8B B 4B 2B 8B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The alum, when added as a coagulant in 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 Increases pH value of water Decreases pH value of water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For the same solid content, if the quantity of sludge with moisture content of 98% is X, then the quantity of sludge with moisture content of 96% will be X/2 X X/4 2X X/2 X X/4 2X ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank increases if None of these The surface area of tank is increased The depth of tank is decreased Particle size is decreased None of these The surface area of tank is increased The depth of tank is decreased Particle size is decreased ANSWER DOWNLOAD EXAMIANS APP
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