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MCQs

Total Questions : 476 | Page 8 of 48 pages
Question 71. What is the upflow velocity considered for a UASB while treating 100% soluble COD?
  1.    1-3 m/h
  2.    4-6 m/h
  3.    6-8 m/h
  4.    8-10 m/h
 Discuss Question
Answer: Option A. -> 1-3 m/h
Answer: (a).1-3 m/h
Question 72. What is the upflow velocity considered for a UASB while treating partially soluble COD?
  1.    1-1.25 m/h
  2.    1.5-2 m/h
  3.    2-3 m/h
  4.    3-4 m/h
 Discuss Question
Answer: Option A. -> 1-1.25 m/h
Answer: (a).1-1.25 m/h
Question 73. What is the retention time considered for a UASB while designing at 16-19 degree Celsius?
  1.    3-5 h
  2.    10-14 h
  3.    22 h
  4.    18 h
 Discuss Question
Answer: Option B. -> 10-14 h
Answer: (b).10-14 h
Question 74. What is the upflow velocity considered for a UASB while treating domestic waste water?
  1.    1-2 m/h
  2.    2-3 m/h
  3.    0.8-1 m/h
  4.    3-4 m/h
 Discuss Question
Answer: Option C. -> 0.8-1 m/h
Answer: (c).0.8-1 m/h
Question 75. What is the retention time considered for a UASB while designing at 22-26 degree Celsius?
  1.    3-5 h
  2.    10-14 h
  3.    7-9 h
  4.    10-12 h
 Discuss Question
Answer: Option C. -> 7-9 h
Answer: (c).7-9 h
Question 76. RO membranes are made of _______
  1.    Plastic
  2.    Cotton
  3.    Silk
  4.    Polymer
 Discuss Question
Answer: Option D. -> Polymer
Answer: (d).Polymer
Question 77. Concentrated seawater which is called _________
  1.    Permeate
  2.    Brine
  3.    RO water
  4.    Salt water
 Discuss Question
Answer: Option B. -> Brine
Answer: (b).Brine
Question 78. The upper limit of brine concentration is ______ times the normal sea water.
  1.    1.5
  2.    2
  3.    2.5
  4.    3
 Discuss Question
Answer: Option C. -> 2.5
Answer: (c).2.5
Question 79. The water flux of RO membranes ______ as water viscosity lowers.
  1.    Increases
  2.    Decreases
  3.    Alters
  4.    Fluctuates
 Discuss Question
Answer: Option A. -> Increases
Answer: (a).Increases
Question 80. The osmotic pressure of the brine increases proportionally to the salt concentration.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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