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MCQs

Total Questions : 1556 | Page 2 of 156 pages
Question 11. Fresh sewage is generally
  1.    Alkaline
  2.    Acidic
  3.    Highly decomposed
  4.    A source of objectionable odour
 Discuss Question
Answer: Option A. -> Alkaline
Question 12. The sewage is pumped up
  1.    From low lying areas
  2.    From flat areas
  3.    From basements
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 13. The dimensions of a rectangular settling tank are: length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is
  1.    204 cu.m
  2.    208 cu.m
  3.    212 cu.m
  4.    216 cu.m
 Discuss Question
Answer: Option D. -> 216 cu.m
Question 14. Bottom openings 15 cm × 15 cm in the standing baffle wall are provided
  1.    15 cm c/c
  2.    22.5 cm c/c
  3.    30 cm c/c
  4.    50 cm c/c
 Discuss Question
Answer: Option B. -> 22.5 cm c/c
Question 15. Ventilating shafts are provided to a sewer line at every
  1.    100 m
  2.    150 m
  3.    200 m
  4.    300 m
 Discuss Question
Answer: Option D. -> 300 m
Question 16. The gradient of sewers depends upon
  1.    Velocity of flow
  2.    Diameter of the sewer
  3.    Discharge
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 17. The laying of sewers is done with
  1.    Magnetic compass
  2.    Theodolite
  3.    Level
  4.    Clinometer
 Discuss Question
Answer: Option C. -> Level
Question 18. Pick up the correct statement from the following:
  1.    The boning rod is used for checking the levels of the sewer inverts
  2.    Manhole covers are made circular for the convenience of the cleaning staff
  3.    A manhole is classified as shallow manhole if its depth is less than 0.9 m
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 19. The sewer which received discharge from two or more main sewers, is known as
  1.    A trunk sewer
  2.    An outfall sewer
  3.    A main sewer
  4.    An intercepting sewer
 Discuss Question
Answer: Option A. -> A trunk sewer
Question 20. Pick up the correct statement from the following:
  1.    The circular section of sewers provides maximum hydraulic mean depth
  2.    The circular sewers are provided for separate sewerage system
  3.    The circular sewers work efficiently if the sections run at least half full
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above

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