31552. The recommended detention period for grit chambers is
31553. India's only Ayurvedic Mental Hospita is at:
31554. The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is
31555. The biggest dam in Kerala:
31556. For trunk and out-fall, the type of sewers generally used, is
31557. Which among the following is known as Yavanapriya?
31558. Hydraulic mean radius is
31559. The pH value of fresh sewage is usually
31560. The moisture content of a sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is
31561. Inter-distance between ventilation columns in a sewer line is kept
31562. Fill up the blanks: 1 have told you all ......... 1 know.?
31563. The factor responsible for purification of sewage in river is
31564. If the peak discharge of a storm water drain (S.W. Drain) is e.xpected to exceed 150 cumecs, the free board to be provided, is
31565. PH value of sludge during alkaline regression stage, is
31566. Depletion of ozone layer in the outer atmosphere may cause
31567. The spacing of bars of perforations of fine screens used for the treatment of sewage, is
31568. The self-cleansing velocity of water flowing through pipe lines, is
31569. Ventilating shafts are provided to a sewer line at every
31570. Which one of the following part of human body withstands minimum radiation
31571. The water carried sewerage system removes
31572. Stoneware sewers are available in size
31573. The sludge does not contain waste water from
31574. If the depth of flow in a circular sewer is 1/4th of its diameter D, the wetted perimeter is
31575. The maximum diameter of sewers adopted in the designs is
31576. Sluge banks are formed if sewage is disposed of in
31577. Design period of 40 to 50 years is adopted for
31578. The pH value of sewage is determined with the help of
31579. Lead caulked joints are used for laying
31580. Which among the following is the biggest irrigation project in Kerala?
31581. For trunk sewers more than 1.25 m in diameter, the ratio of the maximum daily sewage flow to the average daily sewage flow is assumed
31582. At the junction of sewers
31583. Primary treatment of sewage consists of removal of
31584. The rainfall at any place may be determined by
31585. In trickling filter, B.O.D. is reduced to
31586. Which one of the following gases is most significant as air pollutant
31587. Which one of the following statements regarding septic tanks is wrong :
31588. In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient,
31589. The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is
31590. The design period in years for pumping plants, is
31591. The Chezy's constant C in the formula V = C rs depends upon
31592. Afive day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is
31593. The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is
31594. For the open drain (N = 0.025) shown in the below figure, the discharge is
31595. If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is
31596. The average temperature of sewage in India, is
31597. The most widely used pump for lifting sewage is
31598. The sewer which resists sulphide corrosion, is
31599. For large sewers, maximum distance between manholes may be
31600. The first stage of neutral process of sludge digestion, is