Welcome to your Waste Water Engineering Mock test - 3
Take an exciting test in Waste water Engineering
You have only 20 mins to complete the test (25 Questions)
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1) The pH value of fresh sewage is usually
2) Primary treatment of sewage consists of removal of
3) The spacing of bars of perforations of fine screens used for the treatment of sewage, is
4) Pick up the correct statement from the following :
5) Lead caulked joints are used for laying
6) Pick up the correct statement from the following :
7) The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is
8) The algae dies out in the zone of
9) 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
10) Ventilating shafts are provided to a sewer line at every
11) Sluge banks are formed if sewage is disposed of in
12) PH value of sludge during alkaline regression stage, is
13) Hydraulic mean radius is
14) 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
15) 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
16) The self-cleansing velocity of water flowing through pipe lines, is
17) Inter-distance between ventilation columns in a sewer line is kept
18) PH value of sludge during alkaline regression stage, is
19) The recommended detention period for grit chambers is
20) Depletion of ozone layer in the outer atmosphere may cause
21) The pH value of sewage is determined with the help of
22) The sewer pipe which carries sewage from a building for immediate disposal is
23) For trunk and out-fall, the type of sewers generally used, is
24) The maximum diameter of sewers adopted in the designs is
25) The sludge does not contain waste water from
26) Which one of the following part of human body withstands minimum radiation