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MCQs

Total Questions : 103 | Page 3 of 11 pages
Question 21. What is the ratio of Polymer/Phosphate while adding polymer to a waste water in order to remove the phosphates present?
  1.    1:3
  2.    1:2
  3.    3:5
  4.    5:7
 Discuss Question
Answer: Option A. -> 1:3
Answer: (a).1:3
Question 22. Determine the size of a flash mixer for the following data. Round off to the nearest digit.
Flow rate: 2200 m³/hr
  1.    37 m³
  2.    73 m³
  3.    367 m³
  4.    183 m³
 Discuss Question
Answer: Option A. -> 37 m³
Answer: (a).37 m³
Question 23. Calculate the volume of flocculator for the following data:
Flow rate: 500m³/hr
  1.    355 m³
  2.    155 m³
  3.    167 m³
  4.    285 m³
 Discuss Question
Answer: Option C. -> 167 m³
Answer: (c).167 m³
Question 24. _______ is a process by which particles settle to the bottom of the liquid.
  1.    Settling
  2.    Coagulation
  3.    Sedimentation
  4.    Filtration
 Discuss Question
Answer: Option A. -> Settling
Answer: (a).Settling
Question 25. How many types of settling are present?
  1.    2
  2.    3
  3.    4
  4.    6
 Discuss Question
Answer: Option C. -> 4
Answer: (c).4
Question 26. Which is the primary force acting on the Settleable particles?
  1.    Gravitational force
  2.    Centrifugal force
  3.    Mechanical force
  4.    Radial force
 Discuss Question
Answer: Option A. -> Gravitational force
Answer: (a).Gravitational force
Question 27. Settling tanks are also called as sedimentation tanks.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 28. Type III settling is called as hindered settling.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 29. Sedimentation tank is also called as settling tank.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 30. How many types of sedimentation tanks are there based on the method of operation?
  1.    2
  2.    4
  3.    5
  4.    7
 Discuss Question
Answer: Option A. -> 2
Answer: (a).2

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