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MCQs

Total Questions : 80 | Page 3 of 8 pages
Question 21. How much amount of oxygen should one acre of facultative lagoon must provide per day?
  1.    10 pounds
  2.    50 pounds
  3.    75 pounds
  4.    90 pounds
 Discuss Question
Answer: Option B. -> 50 pounds
Answer: (b).50 pounds
Question 22. Ice mats _____ the oxygen transfer surface.
  1.    Alter
  2.    Increase
  3.    Reduce
  4.    Maintain
 Discuss Question
Answer: Option C. -> Reduce
Answer: (c).Reduce
Question 23. What is the maximum allowable temperature in facultative ponds?
  1.    15˚C
  2.    20˚C
  3.    25˚C
  4.    30˚C
 Discuss Question
Answer: Option C. -> 25˚C
Answer: (c).25˚C
Question 24. What is the depth range of facultative ponds?
  1.    0.5-0.8 m
  2.    0.8-1.0 m
  3.    1-1.2 m
  4.    1.2-1.5 m
 Discuss Question
Answer: Option D. -> 1.2-1.5 m
Answer: (d).1.2-1.5 m
Question 25. ______ weather requires large oxygen transfer.
  1.    Cold
  2.    Warm
  3.    Rainy
  4.    Normal
 Discuss Question
Answer: Option B. -> Warm
Answer: (b).Warm
Question 26. Which colour are the facultative ponds?
  1.    Blue
  2.    Green
  3.    Brown
  4.    Black
 Discuss Question
Answer: Option B. -> Green
Answer: (b).Green
Question 27. The one tank is aerating and filling while the other one is decant.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 28. ___________ helps to mix the incoming influent and the returned activated sludge.
  1.    Walls
  2.    Orifice
  3.    Manifold
  4.    Bio-selector
 Discuss Question
Answer: Option D. -> Bio-selector
Answer: (d).Bio-selector
Question 29. Bio-selectors direct the flow.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 30. SBR is a type of ________
  1.    Aerobic process
  2.    Activated sludge process
  3.    Anaerobic process
  4.    Chemical process
 Discuss Question
Answer: Option B. -> Activated sludge process
Answer: (b).Activated sludge process

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