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MCQs

Total Questions : 66 | Page 3 of 7 pages
Question 21. Dirt adhered to wool absorbs water and swells, reaching diameter
  1.    slightly bigger than the fiber
  2.    2/3 times bigger than the fiber
  3.    three four times bigger than the fiber
  4.    five times bigger than the fiber
 Discuss Question
Answer: Option C. -> three four times bigger than the fiber
Answer: (c).three four times bigger than the fiber
Question 22. In second stage, greasy substances are recovered by
  1.    heating the bath to 90 degrees
  2.    subsequent centrifugation
  3.    subsequent centrifugation and centripetation
  4.    heating the bath to 90 degrees and subsequent centrifugation
 Discuss Question
Answer: Option D. -> heating the bath to 90 degrees and subsequent centrifugation
Answer: (d).heating the bath to 90 degrees and subsequent centrifugation
Question 23. Second and third vats in scouring process is uses for
  1.    scouring the wool
  2.    eliminating earth particles
  3.    rinsing the clean wool
  4.    all of above
 Discuss Question
Answer: Option A. -> scouring the wool
Answer: (a).scouring the wool
Question 24. In second and third stage, chemical used is
  1.    sodium
  2.    solvay sodium carbonate
  3.    sodium acetate
  4.    sodium chloride
 Discuss Question
Answer: Option B. -> solvay sodium carbonate
Answer: (b).solvay sodium carbonate
Question 25. After scouring, residual grease must not be greater than
  1.    0.01
  2.    0.02
  3.    0.03
  4.    0.04
 Discuss Question
Answer: Option A. -> 0.01
Answer: (a).0.01
Question 26. Excessive temperature in pre scouring stage can lead to
  1.    felting
  2.    entanglements
  3.    felting and entanglements
  4.    felting and deforming
 Discuss Question
Answer: Option C. -> felting and entanglements
Answer: (c).felting and entanglements
Question 27. In scouring process, extremely low temperature
  1.    improves efficiency
  2.    hinders scouring
  3.    improves cleaning
  4.    hinders felting
 Discuss Question
Answer: Option B. -> hinders scouring
Answer: (b).hinders scouring
Question 28. Clarified product in second stage is used in
  1.    cosmetics
  2.    medical purposes and cosmetics
  3.    medical purposes and chemicals
  4.    chemicals
 Discuss Question
Answer: Option B. -> medical purposes and cosmetics
Answer: (b).medical purposes and cosmetics
Question 29. Three scouring stages must be performed at a temperature that liquefies yolk allowing
  1.    emulsification
  2.    liquidation
  3.    condensation
  4.    scouring
 Discuss Question
Answer: Option A. -> emulsification
Answer: (a).emulsification
Question 30. In fourth and fifth scouring stage, temperature is decreased to
  1.    45 degrees
  2.    55 degrees
  3.    45 and 55 degrees
  4.    32 degrees
 Discuss Question
Answer: Option C. -> 45 and 55 degrees
Answer: (c).45 and 55 degrees

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