Hamad Environmental Engineering 26/03/2021 A. 20°C – 1day B. 25°C- 3day C. 20°C – 5day D. 30°C- 5day Related Mcqs: The depression of water table in a well due to pumping will be maximum_______________?A. at a distance R from the well B. close to the well C. at a distance R/2 from the well D. none of the above where R is the radius of influence... Alum as a coagulant is found to be most effective when pH range of water is______________?A. 2 to 4 B. 4 to 6 C. 6 to 8 D. 8 to 10... Laying of sewers is usually done with the help of________________?A. a theodolite B. a compass C. sight rails and boning rods D. a plane table... When there is no recirculation of sewage, then recirculation factor is_______________?A. 0 B. 1 C. infinity D. none of the above... Which of the following compounds is widely used for algae control ?A. sodium sulphate B. copper sulphate C. sodium chloride D. calcium chloride...
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