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MCQs

Total Questions : 188 | Page 6 of 19 pages
Question 51. Statement 1: In a rising film evaporator, the feed can be very viscous.
Statement 2: In a rising film evaporator, the feed cannot be heat sensitive.
  1.    True, False
  2.    True, True
  3.    False, False
  4.    False, True
 Discuss Question
Answer: Option C. -> False, False
Answer: (c).False, False
Question 52. Statement 1: Scraped surface evaporators are used in the dairy industry.
Statement 2: Plate evaporators can be used for viscous liquids.
  1.    True, False
  2.    True, True
  3.    False, False
  4.    False, True
 Discuss Question
Answer: Option C. -> False, False
Answer: (c).False, False
Question 53. Plate evaporators are used in recovering aroma from fruit juices.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 54. In a rising film evaporator, the temperature difference need not be as high as that in a falling film evaporator.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 55. Industry A is low on budget and is used in the sugar industry. Industry B wants to invest in a good evaporator. They are needed for meat extracts. Which evaporators will you suggest for each of them?
  1.    Forced circulation evaporator, forced circulation evaporator
  2.    Rising film evaporator forced circulation evaporator
  3.    Forced circulation evaporator, rising film evaporator
  4.    Rising film evaporator, rising film evaporator
 Discuss Question
Answer: Option B. -> Rising film evaporator forced circulation evaporator
Answer: (b).Rising film evaporator forced circulation evaporator
Question 56. A major reason as to why evaporators and their selection for different applications in the food industry is very important is because ______
  1.    Organoleptic characteristics of food is very important
  2.    Many food items are heat sensitive
  3.    Majority of them have high moisture content
  4.    All of the mentioned reasons
 Discuss Question
Answer: Option D. -> All of the mentioned reasons
Answer: (d).All of the mentioned reasons
Question 57. In flashing of jams, the temperature of concentrated jam _____ on flashing. Also, the vapor pressure of the concentrated jam _____
  1.    Decreases, sustains combustion
  2.    Increases, sustains combustion
  3.    Decreases, does NOT sustain combustion
  4.    Increases, does NOT sustain combustion
 Discuss Question
Answer: Option A. -> Decreases, sustains combustion
Answer: (a).Decreases, sustains combustion
Question 58. Desolventization which is done in certain evaporators is more similar to distillation than evaporation.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 59. Shifting of a pair of ripened apples from the store house to the vegetable cart is called mass transfer.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 60. In plate evaporator, the heat transfer coefficient is high in spite of low residence time because _____
  1.    It deals with high viscosity food items
  2.    It is economic
  3.    Feed is made to pass as thin film
  4.    All of the mentioned reasons
 Discuss Question
Answer: Option C. -> Feed is made to pass as thin film
Answer: (c).Feed is made to pass as thin film

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