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MCQs

Total Questions : 88 | Page 1 of 9 pages
Question 1. Which of the following materials is not used in the construction of a septic tank?
  1.    Concrete
  2.    Rubber
  3.    Fibreglass
  4.    Plastic
 Discuss Question
Answer: Option B. -> Rubber
Answer: (b).Rubber
Question 2. Septic tank is a small scale treatment unit.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 3. The shape of the tank is circular.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 4. The scum formed in the tank _____
  1.    Flows
  2.    Gets dissolved
  3.    Sink into the bottom
  4.    Floats on top
 Discuss Question
Answer: Option D. -> Floats on top
Answer: (d).Floats on top
Question 5. The heavy particles in the tank _____
  1.    Float
  2.    Sink into the bottom
  3.    Separated using magnetic methods
  4.    Flow along liquid
 Discuss Question
Answer: Option B. -> Sink into the bottom
Answer: (b).Sink into the bottom
Question 6. What is the retention time for rectangular clarifiers?
  1.    1-2 h
  2.    2-3 h
  3.    3-6 h
  4.    6-8 h
 Discuss Question
Answer: Option B. -> 2-3 h
Answer: (b).2-3 h
Question 7. What is the range of overflow rate for circular clarification unit?
  1.    1-3 m³/m²/h
  2.    2-8 m³/m²/h
  3.    3-10 m³/m²/h
  4.    5-12 m³/m²/h
 Discuss Question
Answer: Option A. -> 1-3 m³/m²/h
Answer: (a).1-3 m³/m²/h
Question 8. What is the angle of inclination for lamella plates?
  1.    20-30˚
  2.    30-40˚
  3.    40-60˚
  4.    50-70˚
 Discuss Question
Answer: Option D. -> 50-70˚
Answer: (d).50-70˚
Question 9. What is the retention time for lamella clarifiers?
  1.    1-2 h
  2.    2-4 h
  3.    4-6 h
  4.    6-8 h
 Discuss Question
Answer: Option A. -> 1-2 h
Answer: (a).1-2 h
Question 10. What is the limit of plate load?
  1.    10.7 m/h
  2.    8.2 m/h
  3.    5.4 m/h
  4.    2.9 m/h
 Discuss Question
Answer: Option D. -> 2.9 m/h
Answer: (d).2.9 m/h

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