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MCQs

Total Questions : 1556 | Page 152 of 156 pages
Question 1511. Pick up the in-correct statement from the following?
  1.    Manholes are provided in sewer pipes at suitable intervals
  2.    Catch basins are generally provided in sewers for carrying drainage discharge
  3.    Inlets are generally provided in all sewers
  4.    None of these
 Discuss Question
Answer: Option C. -> Inlets are generally provided in all sewers
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1512. The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is_______________?
  1.    25 %
  2.    50 %
  3.    10 %
  4.    5 %
 Discuss Question
Answer: Option B. -> 50 %
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1513. Dried sewage after treatment is used as____________________?
  1.    Fertilizer
  2.    Building material
  3.    Chemical for lowering B.O.D.
  4.    Base material for paints
 Discuss Question
Answer: Option A. -> Fertilizer
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1514. Which one of the following statements regarding septic tanks is wrong ?
  1.    A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided
  2.    The outlet invert level is kept 5 to 7.5 cm below the inlet invert level
  3.    The minimum width of septic level is 90 cm
  4.    The depth of tank is kept equal to its width
 Discuss Question
Answer: Option D. -> The depth of tank is kept equal to its width
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1515. In areas where rainy season is limited to a few months, the type of sewerage system recommended is__________________?
  1.    Combined system
  2.    Partially separate system
  3.    Separate system
  4.    None of these
 Discuss Question
Answer: Option C. -> Separate system
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1516. The normal value of over flow rates for plain primary sedimentation tanks, ranges between________________?
  1.    25,000 to 35,000 litres/sqm/day
  2.    40,000 to 50,000 litres/sqm/day
  3.    50,000 to 60,000 litres/sqm/day
  4.    80,000 to 100,000 litres/sqm/day
 Discuss Question
Answer: Option B. -> 40,000 to 50,000 litres/sqm/day
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1517. The pH value of sewage is determined with the help of_________________?
  1.    Imhoff Cone
  2.    Turbid meter
  3.    Potentiometer
  4.    None of these
 Discuss Question
Answer: Option C. -> Potentiometer
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1518. The factor responsible for purification of sewage in river is________________?
  1.    Hydrology
  2.    Dissolved oxygen in water
  3.    Temperature
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1519. To maintain aerobic biological activity, the moisture content of the compost mass should be about_________________?
  1.    45 %
  2.    50 %
  3.    55 %
  4.    60 %
 Discuss Question
Answer: Option C. -> 55 %
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1520. Water content of sewage is about___________________?
  1.    90 %
  2.    95 %
  3.    99 %
  4.    9.9 %
 Discuss Question
Answer: Option D. -> 9.9 %
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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