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MCQs

Total Questions : 74 | Page 4 of 8 pages
Question 31. Advanced waste water sludge constitutes which of the following?
  1.    Chemical sludge
  2.    Settlable solids
  3.    Biological solids
  4.    Chemical and biological solids
 Discuss Question
Answer: Option D. -> Chemical and biological solids
Answer: (d).Chemical and biological solids
Question 32. To remove 1% primary sludge which of the following size of mesh of a cyclone gritter is used?
  1.    150
  2.    100
  3.    300
  4.    50
 Discuss Question
Answer: Option A. -> 150
Answer: (a).150
Question 33. To remove 2% primary sludge which of the following size of mesh of a cyclone gritter is used?
  1.    150
  2.    100
  3.    65
  4.    28-35
 Discuss Question
Answer: Option B. -> 100
Answer: (b).100
Question 34. To remove 3% primary sludge which of the following size of mesh of a cyclone gritter is used?
  1.    100
  2.    150
  3.    65
  4.    28-35
 Discuss Question
Answer: Option C. -> 65
Answer: (c).65
Question 35. Which of the following methods is used for stabilization of the sludge?
  1.    Anaerobic digestion
  2.    Sludge drying bed
  3.    Centrifuge
  4.    Filter press
 Discuss Question
Answer: Option A. -> Anaerobic digestion
Answer: (a).Anaerobic digestion
Question 36. Sludge is composed of liquid components alone.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 37. Biosolids are the inorganic wastewater solids.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 38. How many types of sludge are present?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option B. -> 2
Answer: (b).2
Question 39. _______ is a term used for reuse of sewage sludge.
  1.    Solids
  2.    Biosolids
  3.    Potential solids
  4.    Manure
 Discuss Question
Answer: Option B. -> Biosolids
Answer: (b).Biosolids
Question 40. Who introduced the term biosolids?
  1.    UNEPA
  2.    USEPA
  3.    EPA
  4.    WEF
 Discuss Question
Answer: Option D. -> WEF
Answer: (d).WEF

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