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MCQs

Total Questions : 94 | Page 1 of 10 pages
Question 1. Supplemental means of aeration are often employed with an equalization basin to provide better mixing.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 2. Which process is employed to gain sufficient head for the wastewater?
  1.    Screening
  2.    Pumping
  3.    Oxidation
  4.    Fermentation
 Discuss Question
Answer: Option B. -> Pumping
Answer: (b).Pumping
Question 3. Which of the following should be provided in the case where aeration is absent?
  1.    Screening devices
  2.    Mechanical mixers
  3.    Grit removers
  4.    Sedimentation tank
 Discuss Question
Answer: Option B. -> Mechanical mixers
Answer: (b).Mechanical mixers
Question 4. What is the intermediate zone composed of in aerobic-anaerobic ponds?
  1.    Algae
  2.    Aerobic bacteria
  3.    Facultative bacteria
  4.    Organic solids
 Discuss Question
Answer: Option C. -> Facultative bacteria
Answer: (c).Facultative bacteria
Question 5. What is the most common used coagulant?
  1.    Alum
  2.    Ferric sulphate
  3.    Limestone
  4.    Coal
 Discuss Question
Answer: Option A. -> Alum
Answer: (a).Alum
Question 6. Reverse Osmosis is which type of treatment?
  1.    Primary treatment
  2.    Preliminary treatment
  3.    Secondary treatment
  4.    Tertiary treatment
 Discuss Question
Answer: Option D. -> Tertiary treatment
Answer: (d).Tertiary treatment
Question 7. Primary sludge includes __________
  1.    Total suspended solids
  2.    Suspended solids
  3.    Removable solids
  4.    Settleable solids
 Discuss Question
Answer: Option D. -> Settleable solids
Answer: (d).Settleable solids
Question 8. Which is usually prior to reverse osmosis?
  1.    Ultrafiltration
  2.    Activated carbon filter
  3.    Clarifier
  4.    Tube settler
 Discuss Question
Answer: Option A. -> Ultrafiltration
Answer: (a).Ultrafiltration
Question 9. What does zero discharge actually refer to?
  1.    There is zero discharge of ions
  2.    The reject is recycled from every part of the treatment plant
  3.    The reject is not rejected out. Influent equals effluent
  4.    100 percent efficient plant
 Discuss Question
Answer: Option B. -> The reject is recycled from every part of the treatment plant
Answer: (b).The reject is recycled from every part of the treatment plant
Question 10. Secondary sludge includes treated sewage sludge.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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