Q. Pick up the correct statement from the following :

View solution

Q. In olden days the type of section adopted in trunk and out fall sewers was

View solution

Q. For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed

View solution

Q. In a fully mechanised composting plant, involves

View solution

Q. Self-cleansing velocity is

View solution

Q. Fresh sewage may become stale in

View solution

Q. The small sewers are cleaned by

View solution

Q. Dry water flow in a combined sewer, is

View solution

Q. Which one of the following tests is used for testing sewer pipes :

View solution

Q. Nitrogen cycle of sewage, is

View solution

Q. In sewers the highest non-scouring velocity is achieved in

View solution

Q. In sewage having fully oxidised organic matter, the nitrogen exists in the form of

View solution

Q. It is customary to design a sewer for D.W.F. on the basis of

View solution

Q. During preliminary treatment of a sewage

View solution

Q. Pick up the correct statement from the following :

View solution

Q. The most dangerous pollutant in vehicular emissions is

View solution

Q. If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is

View solution

Q. The clarigesters are

View solution

Q. Rate of flow of sewage is generally assumed

View solution

Q. Maximum permissible velocity 1.5 m/sec, is adopted in drains

View solution