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MCQs

Total Questions : 188 | Page 3 of 19 pages
Question 21. Agitator vessels are taller than bubble columns.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 22. Which of the following is a process/method to enhance the amount of pure distillate?
  1.    Rectification
  2.    Stripping
  3.    Re-fluxing
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 23. In re-fluxing, the re-flux ratio needs to a minimum.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 24. Extremely small packing is favorable for packed towers as the surface area increases.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 25. The feed line tells us that a particular feed A is at a sub-cooled liquid. Which of the following explains the above statement?
  1.    The liquid is at its boiling point
  2.    None of the mentioned
  3.    A liquid below its boiling temperature
  4.    The liquid is a mixture of boiling and some vapors
 Discuss Question
Answer: Option C. -> A liquid below its boiling temperature
Answer: (c).A liquid below its boiling temperature
Question 26. _____ is an important solvent for wet and edible materials.
  1.    Hexane
  2.    Acetone
  3.    Chloroform
  4.    All of the mentioned
 Discuss Question
Answer: Option A. -> Hexane
Answer: (a).Hexane
Question 27. Statement 1: Caffeine is the active principle in coffee. It cannot be stripped off it.
Statement 2: Caffeine can be stripped off coffee by extraction.
  1.    True, False
  2.    True, True
  3.    False, False
  4.    False, True
 Discuss Question
Answer: Option D. -> False, True
Answer: (d).False, True
Question 28. Statement 1: Presence of certain organic solvents in solvent extraction can prove to be carcinogenic.
Statement 2: CO₂ gas can be used in super critical fluid extraction.
  1.    True, False
  2.    True, True
  3.    False, False
  4.    False, True
 Discuss Question
Answer: Option B. -> True, True
Answer: (b).True, True
Question 29. What is extraction in paprika used for?
  1.    Obtain proteins from the end product
  2.    Desolventization of final product
  3.    Extraction of its natural color
  4.    All of the mentioned
 Discuss Question
Answer: Option C. -> Extraction of its natural color
Answer: (c).Extraction of its natural color
Question 30. Using hot water for decoction followed by spraying drying is the procedure used for making instant coffee.
  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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