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MCQs

Total Questions : 30 | Page 2 of 3 pages
Question 11. Given for an absorber, the minimum non diffusing liquid flow rate is 20 moles/hr and the non diffusing gas flow rate is 30 moles/hr. As the actual liquid flow rate is 2.5 times the minimum. Find the slope of the operating line.
  1.    1.67
  2.    3.75
  3.    2.67
  4.    4.25
 Discuss Question
Answer: Option A. -> 1.67
Answer: (a).1.67
Question 12. The equilibrium characteristics of the solubility of a gas in liquid helps to determine the
  1.    Rate
  2.    Concentration
  3.    Time
  4.    No existence of equilibrium characteristics
 Discuss Question
Answer: Option A. -> Rate
Answer: (a).Rate
Question 13. Solubility of a gas increases with increase in temperature.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 14. Gas absorption is the process of transferring solute component from liquid solvent to gas mixture.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 15. For the Absorber design, the plotting with mole ratio helps to find the
  1.    Slope of operating line
  2.    Slope of equilibrium curve
  3.    Minimum number of trays
  4.    Maximum number of trays
 Discuss Question
Answer: Option A. -> Slope of operating line
Answer: (a).Slope of operating line
Question 16. Which of the following is not an example of ideal solution?
  1.    Solution of benzene in toluene
  2.    Solution of ethyl and propyl alcohol
  3.    Paraffin hydrocarbon gas in paraffin oil
  4.    Solution of isobutane and olefins
 Discuss Question
Answer: Option D. -> Solution of isobutane and olefins
Answer: (d).Solution of isobutane and olefins
Question 17. According to Hendry’s law,
  1.    Y=(p/P)
  2.    Y=(p* P)
  3.    p=(Y/P)
  4.    p=(Y*P)
 Discuss Question
Answer: Option A. -> Y=(p/P)
Answer: (a).Y=(p/P)
Question 18. Match the following:
1) Hendry’s law a) Ideal solution
2) Dalton’s law b) Non- Ideal solution
3) Raoult’s law c) Sum of partial pressure
  1.    1- (b), 2-(c), 3-(a)
  2.    1-(a), 2-(b), 3-(c)
  3.    1-(c), 2-(b), 3-(a)
  4.    1-(a), 2-(c), 3-(b)
 Discuss Question
Answer: Option A. -> 1- (b), 2-(c), 3-(a)
Answer: (a).1- (b), 2-(c), 3-(a)
Question 19. Find the false statement for the better choice of the absorbent.
  1.    Gas solubility should be high
  2.    Vapour pressure should be low
  3.    Viscosity should be high
  4.    Low freezing point
 Discuss Question
Answer: Option B. -> Vapour pressure should be low
Answer: (b).Vapour pressure should be low
Question 20. According to Raoult’s law, for a pure component solution the partial pressure is equals to
  1.    Total pressure
  2.    Vapour pressure
  3.    Atmospheric pressure
  4.    Mole fraction of respective phase
 Discuss Question
Answer: Option B. -> Vapour pressure
Answer: (b).Vapour pressure

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