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MCQs

Total Questions : 135 | Page 11 of 14 pages
Question 101. Splashing helps in improving aerobic conditions.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 102. Trickling filter can also be called as a biofilter.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 103. The supernatant from the tank flows into a ____
  1.    Trickling filter
  2.    Dosing device
  3.    Pumping station
  4.    Sedimentation tank
 Discuss Question
Answer: Option B. -> Dosing device
Answer: (b).Dosing device
Question 104. Which of the following is not used as a media for trickling filters?
  1.    Sand
  2.    Geotextiles
  3.    Gravel
  4.    Paper
 Discuss Question
Answer: Option D. -> Paper
Answer: (d).Paper
Question 105. __________ in trickling filter contains many species like bacteria and round worms.
  1.    Treated water
  2.    Wastewater
  3.    Biofilm
  4.    Air influent
 Discuss Question
Answer: Option C. -> Biofilm
Answer: (c).Biofilm
Question 106. When filled which of the following material both nitrogen and BOD are removed?
  1.    River rock (Large)
  2.    River Rock (Small)
  3.    Plastic High specific area
  4.    Plastic random packing-high specific area
 Discuss Question
Answer: Option A. -> River rock (Large)
Answer: (a).River rock (Large)
Question 107. What is the surface area of the plastic random packing conventional packing material used in trickling filters as the packing medium?
  1.    60 m²/m³
  2.    90 m²/m³
  3.    98 m²/m³
  4.    150 m²/m³
 Discuss Question
Answer: Option C. -> 98 m²/m³
Answer: (c).98 m²/m³
Question 108. What is the surface area of the plastic high specific surface area packing material used in trickling filters as the packing medium?
  1.    60 m²/m³
  2.    90 m²/m³
  3.    140 m²/m³
  4.    45 m²/m³
 Discuss Question
Answer: Option C. -> 140 m²/m³
Answer: (c).140 m²/m³
Question 109. What is the surface area of the plastic random packing high specific surface area packing material used in trickling filters as the packing medium?
  1.    60 m²/m³
  2.    90 m²/m³
  3.    98 m²/m³
  4.    150 m²/m³
 Discuss Question
Answer: Option D. -> 150 m²/m³
Answer: (d).150 m²/m³
Question 110. What is the surface area of the plastic conventional packing material used in trickling filters as the packing medium?
  1.    60 m²/m³
  2.    90 m²/m³
  3.    140 m²/m³
  4.    45 m²/m³
 Discuss Question
Answer: Option B. -> 90 m²/m³
Answer: (b).90 m²/m³

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