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MCQs

Total Questions : 94 | Page 4 of 10 pages
Question 31. Separation is a unit operation.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 32. What did the structures use to prevent floating matter that enters into pumps and pumping systems?
  1.    Aeration units
  2.    Screens
  3.    Grit chamber
  4.    Bioreactor
 Discuss Question
Answer: Option B. -> Screens
Answer: (b).Screens
Question 33. Refrigeration is a mass transfer process.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 34. Unit operations are the ______ operations to remove the impurities.
  1.    Physical
  2.    Chemical
  3.    Biological
  4.    Biochemical
 Discuss Question
Answer: Option A. -> Physical
Answer: (a).Physical
Question 35. Solids concentration will be ________ in water than wastewater.
  1.    More
  2.    Less
  3.    Equal to
  4.    Similar
 Discuss Question
Answer: Option B. -> Less
Answer: (b).Less
Question 36. What is the concentration of solids in the filtrate after thawing and freezing?
  1.    45-50%
  2.    50-60%
  3.    25-40%
  4.    60-65%
 Discuss Question
Answer: Option C. -> 25-40%
Answer: (c).25-40%
Question 37. Out of the below given methods which of these requires a grit removal prior to it?
  1.    Sludge drying bed
  2.    Filter press
  3.    Centrifuge
  4.    Sludge lagoons
 Discuss Question
Answer: Option C. -> Centrifuge
Answer: (c).Centrifuge
Question 38. Out of the below given methods which of these have the lowest capital cost?
  1.    Sludge drying bed
  2.    Filter press
  3.    Centrifuge
  4.    Sludge lagoons
 Discuss Question
Answer: Option A. -> Sludge drying bed
Answer: (a).Sludge drying bed
Question 39. Out of the below given methods which of these is operated in batch process?
  1.    Sludge drying bed
  2.    Belt Filter press
  3.    Centrifuge
  4.    Sludge lagoons
 Discuss Question
Answer: Option B. -> Belt Filter press
Answer: (b).Belt Filter press
Question 40. Out of the below given methods which of these have the highest cake solids concentration?
  1.    Sludge drying bed
  2.    Recessed plate Filter press
  3.    Centrifuge
  4.    Sludge lagoons
 Discuss Question
Answer: Option B. -> Recessed plate Filter press
Answer: (b).Recessed plate Filter press

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