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MCQs

Total Questions : 88 | Page 8 of 9 pages
Question 71. Effluent sewer is also called as ______
  1.    Septic tank drainage
  2.    Drainage
  3.    Septic tank effluent drainage
  4.    Effluent drainage
 Discuss Question
Answer: Option C. -> Septic tank effluent drainage
Answer: (c).Septic tank effluent drainage
Question 72. What is the function of two tanks provided in septic tank systems?
  1.    Divide solids and liquid
  2.    Divide wastewater and water
  3.    Divide black and grey water
  4.    Store large amount of effluent
 Discuss Question
Answer: Option C. -> Divide black and grey water
Answer: (c).Divide black and grey water
Question 73. Gravity systems are preferred over pumping systems for the flow of wastewater.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 74. Oil and grease is the presence of inorganics in wastewater.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 75. Lipophilic end is water liking.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 76. The lipophilic end ______
  1.    Remains in water
  2.    Enters oil droplet
  3.    Dissolves
  4.    Stays on top of water surface
 Discuss Question
Answer: Option B. -> Enters oil droplet
Answer: (b).Enters oil droplet
Question 77. What is the size of the oil droplets?
  1.    Less than 50 microns
  2.    Less than 40 microns
  3.    Less than 30 microns
  4.    Less than 20 microns
 Discuss Question
Answer: Option D. -> Less than 20 microns
Answer: (d).Less than 20 microns
Question 78. The surfactants have ______ chains.
  1.    Linear
  2.    Hydrocarbon
  3.    Complex
  4.    Carbon
 Discuss Question
Answer: Option B. -> Hydrocarbon
Answer: (b).Hydrocarbon
Question 79. What is the colour of the emulsion?
  1.    White
  2.    Grey
  3.    Black
  4.    Yellow
 Discuss Question
Answer: Option A. -> White
Answer: (a).White
Question 80. _________ act as a coupling agent between oil oil/water phases.
  1.    Oil
  2.    Water
  3.    Emulsifier
  4.    Disinfectants
 Discuss Question
Answer: Option C. -> Emulsifier
Answer: (c).Emulsifier

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