Two Phase Gas(Engineering > Chemical Engineering ) Questions and Answers

Question 1. Which of the following is defined as the ratio of partial pressure and vapor pressure?
  1.    Relative Humidity
  2.    Molal Humidity
  3.    Humidity
  4.    None of the mentioned
Explanation:-
Answer: Option A. -> Relative Humidity
Answer: (a).Relative Humidity
Question 2. What is the relative saturation of a gas with partial pressure 10 mm Hg and vapor pressure 5 mm Hg?
  1.    0.5
  2.    1
  3.    2
  4.    4
Explanation:-
Answer: Option C. -> 2
Answer: (c).2
Question 3. What is the relative saturation of a gas with partial pressure 38 mm Hg and vapor pressure 1 torr?
  1.    0.05
  2.    0.5
  3.    2
  4.    38
Explanation:-
Answer: Option D. -> 38
Answer: (d).38
Question 4. What is the relative humidity of a gas with partial pressure of water vapor 360 Pa and vapor pressure 1 atm?
  1.    100%
  2.    225.1%
  3.    355.4%
  4.    405.9%
Explanation:-
Answer: Option C. -> 355.4%
Answer: (c).355.4%
Question 5. What is the relative humidity of a gas with partial pressure of water vapor is 5 mm Hg and vapor pressure 8 mm Hg?
  1.    25%
  2.    32.5%
  3.    45%
  4.    62.5%
Explanation:-
Answer: Option D. -> 62.5%
Answer: (d).62.5%
Question 6. What is the fraction of gas in a system with partial pressure 2 mm Hg and vapor pressure 5 mm Hg?
  1.    0.4
  2.    0.5
  3.    0.6
  4.    0.8
Explanation:-
Answer: Option A. -> 0.4
Answer: (a).0.4
Question 7. What is the partial pressure of a 40% gas in a system with vapor pressure 1 mm Hg?
  1.    0.2 mm Hg
  2.    0.4 mm Hg
  3.    0.6 mm Hg
  4.    0.8 mm Hg
Explanation:-
Answer: Option B. -> 0.4 mm Hg
Answer: (b).0.4 mm Hg
Question 8. What is the vapor pressure of 50% gas in a system with partial pressure 2 mm Hg?
  1.    1 mm Hg
  2.    2 mm Hg
  3.    4 mm Hg
  4.    8 mm Hg
Explanation:-
Answer: Option C. -> 4 mm Hg
Answer: (c).4 mm Hg
Question 9. What is the partial pressure of 20% gas in a system with vapor pressure 10 mm Hg?
  1.    2 mm Hg
  2.    10 mm Hg
  3.    50 mm Hg
  4.    100 mm Hg
Explanation:-
Answer: Option A. -> 2 mm Hg
Answer: (a).2 mm Hg
Question 10. What is the vapor pressure of 40% gas in a system with partial pressure 20 mm Hg?
  1.    5 mm Hg
  2.    10 mm Hg
  3.    20 mm Hg
  4.    50 mm Hg
Explanation:-
Answer: Option D. -> 50 mm Hg
Answer: (d).50 mm Hg
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