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MCQs

Total Questions : 103 | Page 4 of 11 pages
Question 31. How many types of sedimentation tanks are present based on the shape of the tank?
  1.    2
  2.    3
  3.    4
  4.    5
 Discuss Question
Answer: Option A. -> 2
Answer: (a).2
Question 32. What is the time period for which the water is stored in fill and draw type of sedimentation tank?
  1.    48 hours
  2.    24 hours
  3.    52 hours
  4.    76 hours
 Discuss Question
Answer: Option B. -> 24 hours
Answer: (b).24 hours
Question 33. What is the accumulated layer at the bottom of the tank called as?
  1.    Flocs
  2.    Sediment
  3.    Sludge
  4.    Sewage
 Discuss Question
Answer: Option C. -> Sludge
Answer: (c).Sludge
Question 34. In Newton’s law for the settling of discrete particles, the particles size is _______
  1.    1 mm
  2.    Greater than 1 mm
  3.    Less than 1 mm
  4.    0.5 mm
 Discuss Question
Answer: Option B. -> Greater than 1 mm
Answer: (b).Greater than 1 mm
Question 35. For laminar flow Reynolds number is 1.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 36. The individual particle settling is hindered when the volumetric concentration is high.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 37. Newton’s law is used for_______
  1.    Turbulent flows
  2.    Non-turbulent flows
  3.    Laminar flow
  4.    Spiral flow
 Discuss Question
Answer: Option A. -> Turbulent flows
Answer: (a).Turbulent flows
Question 38. Non-spherical particles will settle _______ spherical particles.
  1.    Slower than
  2.    Faster than
  3.    Equal as
  4.    Same as
 Discuss Question
Answer: Option A. -> Slower than
Answer: (a).Slower than
Question 39. A process of contact and adhesion whereby the particles of a dispersion form larger-size clusters is called ________
  1.    Coagulation
  2.    Flocculation
  3.    Suspension
  4.    Sedimentation
 Discuss Question
Answer: Option B. -> Flocculation
Answer: (b).Flocculation
Question 40. How many types of solids are present in water?
  1.    2
  2.    4
  3.    6
  4.    8
 Discuss Question
Answer: Option A. -> 2
Answer: (a).2

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