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MCQs

Total Questions : 129 | Page 7 of 13 pages
Question 61. Which one of the following lakes has minimum productivity?
  1.    Mesotrophic lake
  2.    Senescent lake
  3.    Oligotrophic lake
  4.    Eutrophic lake
 Discuss Question
Answer: Option C. -> Oligotrophic lake
Answer: (c).Oligotrophic lake
Question 62. The eutrophication process leads to turbidity in lakes.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 63. ________ is the process of acceleration of eutrophication due to increased phosphorous content in lakes.
  1.    Photosynthesis
  2.    Chemical eutrophication
  3.    Cultural eutrophication
  4.    Custom eutrophication
 Discuss Question
Answer: Option C. -> Cultural eutrophication
Answer: (c).Cultural eutrophication
Question 64. The lakes are classified into how many types on the basis of productivity?
  1.    2
  2.    3
  3.    4
  4.    6
 Discuss Question
Answer: Option C. -> 4
Answer: (c).4
Question 65. Which type of pollution is Cultural eutrophication?
  1.    Water pollution
  2.    Noise pollution
  3.    Thermal pollution
  4.    Soil pollution
 Discuss Question
Answer: Option A. -> Water pollution
Answer: (a).Water pollution
Question 66. What is the maximum capacity of medium screen in collecting solids?
  1.    30L
  2.    40L
  3.    50L
  4.    90L
 Discuss Question
Answer: Option D. -> 90L
Answer: (d).90L
Question 67. The relation between dynamic and kinematic viscosity is given by ____________
  1.    Dynamic viscosity = Kinematic viscosity * Density of water
  2.    Kinematic viscosity = Dynamic viscosity + Density of water
  3.    Dynamic viscosity = Kinematic viscosity * Density of water
  4.    Dynamic viscosity = Kinematic viscosity / Density of water
 Discuss Question
Answer: Option C. -> Dynamic viscosity = Kinematic viscosity * Density of water
Answer: (c).Dynamic viscosity = Kinematic viscosity * Density of water
Question 68. The head loss through the screen is given by HL = k* (Vₜ² – Vₐ²), where Vₜ and Vₐ are velocities through and above the screen respectively. What is the value of constant k?
  1.    1
  2.    0.0050
  3.    0.0729
  4.    0.0236
 Discuss Question
Answer: Option C. -> 0.0729
Answer: (c).0.0729
Question 69. Which of the following has minimum detention period?
  1.    Grit chamber
  2.    Sedimentation tank
  3.    Oxidation ditch
  4.    Oxidation pond
 Discuss Question
Answer: Option A. -> Grit chamber
Answer: (a).Grit chamber
Question 70. The unit of dynamic viscosity is ____________
  1.    Metre²/Sec
  2.    Metre/Sec
  3.    Pa * Sec
  4.    Dimensionless
 Discuss Question
Answer: Option C. -> Pa * Sec
Answer: (c).Pa * Sec

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