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MCQs

Total Questions : 129 | Page 3 of 13 pages
Question 21. The minimum spacing between the bars on fine screen is ____________
  1.    0.3mm
  2.    0.9mm
  3.    1.5mm
  4.    0.5mm
 Discuss Question
Answer: Option C. -> 1.5mm
Answer: (c).1.5mm
Question 22. The spacing between the bars in racks is ____________
  1.    30mm
  2.    50mm
  3.    70mm
  4.    90mm
 Discuss Question
Answer: Option B. -> 50mm
Answer: (b).50mm
Question 23. Screens are inclined to the direction of flow to ____________
  1.    Increase the flow velocity
  2.    Increase the opening area
  3.    Decrease the flow velocity
  4.    Increase the head loss
 Discuss Question
Answer: Option C. -> Decrease the flow velocity
Answer: (c).Decrease the flow velocity
Question 24. __________ is used to cut the sewage into smaller parts.
  1.    Flocculator
  2.    Tube settlers
  3.    Shredders
  4.    Aerators
 Discuss Question
Answer: Option C. -> Shredders
Answer: (c).Shredders
Question 25. The maximum spacing between the bars in medium screen is ____________
  1.    40mm
  2.    50mm
  3.    70mm
  4.    90mm
 Discuss Question
Answer: Option A. -> 40mm
Answer: (a).40mm
Question 26. Which of the following instrument is used to measure turbidity?
  1.    Olfactometer
  2.    Turbidity meter
  3.    Colorimeter
  4.    Spectrophotometer
 Discuss Question
Answer: Option B. -> Turbidity meter
Answer: (b).Turbidity meter
Question 27. Which color indicates the fresh sewage?
  1.    Pink
  2.    Red
  3.    Black
  4.    Grey
 Discuss Question
Answer: Option D. -> Grey
Answer: (d).Grey
Question 28. The color of the septic sewage is __________
  1.    Pink
  2.    Red
  3.    Black
  4.    Grey
 Discuss Question
Answer: Option C. -> Black
Answer: (c).Black
Question 29. When the sewage becomes stronger, the turbidity of wastewater?
  1.    Increases
  2.    Decreases
  3.    Becomes constant
  4.    Slightly decrease
 Discuss Question
Answer: Option A. -> Increases
Answer: (a).Increases
Question 30. The odor in wastewater is measured by __________
  1.    Osmoscope
  2.    Chromatography
  3.    Olfactometer
  4.    Turbidity meter
 Discuss Question
Answer: Option A. -> Osmoscope
Answer: (a).Osmoscope

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