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MCQs

Total Questions : 79 | Page 2 of 8 pages
Question 11. Statement 1: Root mean square is denoted by σ₂
Statement 2: σ₂ will show the variation of a composition obtained after mixing. Hence the lesser it is, the more efficient is the mixing.
  1.    True, False
  2.    True, True
  3.    False, False
  4.    False, True
 Discuss Question
Answer: Option B. -> True, True
Answer: (b).True, True
Question 12. Mixing index is applicable for mixing of solids at zero time.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 13. Which of the following with respect to mixing is true?
  1.    It is used to distribute heat uniformly to all the components of the mixture
  2.    Mixing becomes difficult when one of the phases to be mixed is in minor quantity
  3.    Solid-solid mixing is more difficult than other phases
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 14. Which of the following conditions show that a certain industrial mixer is the best?
  1.    Power load for mixing is minimum
  2.    Standard deviation is minimum
  3.    Time required for mixing is minimum
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 15. Mixing Index is a ratio of the standard deviation of various products during mixing to that at zero mixing.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 16. The clearance between the impeller and the vessel in a mixer is usually kept _____
  1.    High
  2.    Low
  3.    Cannot be determined
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Low
Answer: (b).Low
Question 17. The force used for mixing by mixing equipment for pastes and dough is _____
  1.    Centrifugal smearing
  2.    Impact
  3.    Tumbling
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Answer: (d).All of the mentioned
Question 18. Statement 1: Kneaders are specially used for pastry/viscous liquids in the food industry.
Statement 2: Kneaders are used for mixing dough with fats and making them homogeneous mixtures.
  1.    True, False
  2.    True, True
  3.    False, False
  4.    False, True
 Discuss Question
Answer: Option B. -> True, True
Answer: (b).True, True
Question 19. Statement 1: Effectiveness of mixing in kneaders depends on the blade design.
Statement 2: Kneaders have a high clearance between the two oppositely rotating blades and the vessel.
  1.    True, False
  2.    True, True
  3.    False, False
  4.    False, True
 Discuss Question
Answer: Option B. -> True, True
Answer: (b).True, True
Question 20. Rate of mixing at any time is given by the extent of mixing at that particular time.
  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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