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MCQs

Total Questions : 66 | Page 2 of 7 pages
Question 11. If the time taken for the moisture removal is obtained from the formula
Time = Ss(Xc – Xe)/ Nc * A ln ((X1-Xe)/(X2-Xe))
then the falling curve will be curves symmetrically
Where, Ss= Wet solid weight
Xc,Xe- constant & equilibrium moisture content
X1,X2 – initial and final moisture content
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 12. Find the moisture to be evaporated per kg of dried product if initial and final moisture content per kg of dry solid is 85% and 15%.
  1.    0.5
  2.    0.6
  3.    0.7
  4.    0.8
 Discuss Question
Answer: Option C. -> 0.7
Answer: (c).0.7
Question 13. Find the region if the final and the initial moisture content are 40% and 30% (Dry basis) and the critical moisture content is 45%.
  1.    Constant rate
  2.    Falling rate
  3.    Internal movement
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Falling rate
Answer: (b).Falling rate
Question 14. Falling rate period of the batch drying curve = _______ + ___________
  1.    Internal movement, unsaturated surface drying
  2.    Internal movement, saturated surface drying
  3.    External movement, unsaturated surface drying
  4.    External movement, saturated surface drying
 Discuss Question
Answer: Option A. -> Internal movement, unsaturated surface drying
Answer: (a).Internal movement, unsaturated surface drying
Question 15. There will be a change in the rate of drying of a batch process after the constant drying process.
  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. Convert 80% of moisture in wet basis to dry basis ( kg water/kg dry solid)
  1.    4
  2.    8
  3.    12
  4.    16
 Discuss Question
Answer: Option A. -> 4
Answer: (a).4
Question 17. The method of drying by conduction through materials are done by _________
  1.    Direct driers
  2.    Indirect driers
  3.    Tray driers
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Indirect driers
Answer: (b).Indirect driers
Question 18. The substance moisture exerts equilibrium vapour pressure equals to vapour pressure of liquid is ________
  1.    Bound moisture
  2.    Unbound moisture
  3.    Equilibrium moisture
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Unbound moisture
Answer: (b).Unbound moisture
Question 19. The moisture which can be evaporated is bound moisture.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 20. If the equilibrium vapour pressure is lower than pure liquid pressure then the moisture content is ___________
  1.    Bound moisture
  2.    Unbound moisture
  3.    Equilibrium moisture
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Bound moisture
Answer: (a).Bound moisture

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