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MCQs

Total Questions : 112 | Page 7 of 12 pages
Question 61. Multistage flash evaporator produces _____ kg of water per kg of prime steam.
  1.    5
  2.    10
  3.    15
  4.    20
 Discuss Question
Answer: Option D. -> 20
Answer: (d).20
Question 62. The number of stages involved in the desalination using a multistage flash evaporator is _________________
  1.    20
  2.    38
  3.    49
  4.    69
 Discuss Question
Answer: Option D. -> 69
Answer: (d).69
Question 63. Which of the following desalination method is more suitable for brackish water than sea water?
  1.    Distillation
  2.    Solar evaporation
  3.    Reverse osmosis
  4.    Freezing
 Discuss Question
Answer: Option C. -> Reverse osmosis
Answer: (c).Reverse osmosis
Question 64. The process in which the brackish water is forced across a permeable membrane by mechanical forces is called as _____________
  1.    Filtration
  2.    Semi filtration
  3.    Coagulation
  4.    Hyper filtration
 Discuss Question
Answer: Option D. -> Hyper filtration
Answer: (d).Hyper filtration
Question 65. Which of the following is the best evaporative desalinating method?
  1.    Vertical tube evaporator
  2.    Multistage flash evaporator
  3.    Tube settler
  4.    Multi-effect multistage flash evaporator
 Discuss Question
Answer: Option B. -> Multistage flash evaporator
Answer: (b).Multistage flash evaporator
Question 66. In which desalination process, the salt ions are removed from seawater by means of electric current?
  1.    Distillation
  2.    Electro-dialysis
  3.    Reverse osmosis
  4.    Freezing
 Discuss Question
Answer: Option B. -> Electro-dialysis
Answer: (b).Electro-dialysis
Question 67. In which desalination process, the cooling of sea water is done to obtain fresh water?
  1.    Distillation
  2.    Electro-dialysis
  3.    Reverse osmosis
  4.    Freezing
 Discuss Question
Answer: Option D. -> Freezing
Answer: (d).Freezing
Question 68. In Electro-dialysis, the electric energy which required is _____________
  1.    Directly proportional to cation permeable membrane
  2.    Directly proportional to anion permeable membrane
  3.    Directly proportional to salt concentration
  4.    Inversely proportional to salt concentration
 Discuss Question
Answer: Option C. -> Directly proportional to salt concentration
Answer: (c).Directly proportional to salt concentration
Question 69. The maximum salt concentration up to which desalination of brackish water is possible by Electro-dialysis is _____________
  1.    1000ppm
  2.    2000ppm
  3.    3000ppm
  4.    5000ppm
 Discuss Question
Answer: Option D. -> 5000ppm
Answer: (d).5000ppm
Question 70. The pressure freezing process works on the vacuum free vapor compression principle.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False

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