Environmental Engineering The settling velocity of a particle in a sedimentation tank increases if The surface area of tank is increased None of these Particle size is decreased The depth of tank is decreased The surface area of tank is increased None of these Particle size is decreased The depth of tank is decreased ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following compounds is widely used for algae control? Sodium chloride Sodium sulphate Copper sulphate Calcium chloride Sodium chloride Sodium sulphate Copper sulphate Calcium chloride ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to rapid sand filters, slow sand filters give (i) Slower filtration rate (ii) Higher filtration rate (iii) Lesser efficiency in removal of bacteria (iv) Higher efficiency in removal of bacteria The correct answer is (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (ii) (i) and (iv) (ii) and (iv) (ii) and (iii) (i) and (ii) 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 4B 8B B 2B 4B 8B B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally More and more Less and more More and less Less and less More and more Less and more More and less Less and less ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Corrosion in concrete sewers is caused by Septic conditions Dissolved oxygen Chlorine Nitrogen Septic conditions Dissolved oxygen Chlorine Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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