Environmental Engineering The settling velocity of a particle in a sedimentation tank increases if The surface area of tank is increased Particle size is decreased None of these The depth of tank is decreased The surface area of tank is increased Particle size is decreased None of these The depth of tank is decreased 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 Reflux valve Pressure relief valve Sluice valve Air relief valve Reflux valve Pressure relief valve Sluice valve Air relief valve ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The gas from sludge digestion tank is mainly composed of Carbon dioxide Hydrogen sulphide Methane Nitrogen Carbon dioxide Hydrogen sulphide Methane Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical oxygen demand (COD) is given by TOD > BOD > COD TOD > COD > BOD BOD > COD > TOD COD > BOD > TOD TOD > BOD > COD TOD > COD > BOD BOD > COD > TOD COD > BOD > TOD 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) 2B B 8B 4B 2B B 8B 4B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In chlorination, with the rise in temperature of water, death rate of bacteria Decreases Remains unaffected Increases None of these Decreases Remains unaffected Increases None of these ANSWER DOWNLOAD EXAMIANS APP
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