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MCQs

Total Questions : 79 | Page 3 of 8 pages
Question 21. Statement 1: Dispersion of one immiscible liquid into another also involves size reduction.
Statement 2: Leaching requires size reduction.
  1.    True, False
  2.    True, True
  3.    False, False
  4.    False, True
 Discuss Question
Answer: Option B. -> True, True
Answer: (b).True, True
Question 22. Statement 1: Grinding laws are based on the energy required for the creation of new surface area.
Statement 2: In general, all the laws are based on the principle that the energy required per unit area of the surface is directly proportional to the size of the particle.
  1.    True, False
  2.    True, True
  3.    False, False
  4.    False, True
 Discuss Question
Answer: Option B. -> True, True
Answer: (b).True, True
Question 23. Which of the following is NOT true with respect to size reduction?
  1.    Size reduction is an energy inefficient process as the energy required for grinding is very high
  2.    Some of the energy liberated in the formation of new small surfaces is the grinding energy required by food material per unit surface area to form new surface areas and the rest is generally just heat
  3.    The crushing efficiency is inversely proportional to the surface created
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> The crushing efficiency is inversely proportional to the surface created
Answer: (c).The crushing efficiency is inversely proportional to the surface created
Question 24. Which of the following is NOT a method used for size reduction?
  1.    Cutting
  2.    Impact
  3.    Burning
  4.    Shear
 Discuss Question
Answer: Option C. -> Burning
Answer: (c).Burning
Question 25. Statement 1: A hammer mill uses an impact to break particles.
Statement 2: A chakki uses compression to break particles.
  1.    True, False
  2.    True, True
  3.    False, False
  4.    False, True
 Discuss Question
Answer: Option A. -> True, False
Answer: (a).True, False
Question 26. Kick’s law is an intermediate between rittinger’s law and bond’s law.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 27. Which of the following uses attrition?
  1.    Ball mill
  2.    Plate mill
  3.    Roller mill
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 28. Which of the following is used for shredding meat in the food industry?
  1.    Ball mill
  2.    Hammer mill
  3.    Knife cutter
  4.    All of the mentioned
 Discuss Question
Answer: Option C. -> Knife cutter
Answer: (c).Knife cutter
Question 29. A ball mill uses _____
  1.    Impact
  2.    Attrition
  3.    Impact & Attrition
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Impact & Attrition
Answer: (c).Impact & Attrition
Question 30. A jaw crusher uses _____
  1.    Compression
  2.    Shear
  3.    Cutting
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Compression
Answer: (a).Compression

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