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MCQs

Total Questions : 129 | Page 2 of 13 pages
Question 11. If the vander waal equation has only one root, what is the relation between a and b?
  1.    729a = pb²
  2.    243a = pb²
  3.    81a = pb²
  4.    9a = pb²
 Discuss Question
Answer: Option A. -> 729a = pb²
Answer: (a).729a = pb²
Question 12. Virial Equation is a ______
  1.    Arithmetic Progression
  2.    Geometric Progression
  3.    Harmonic Progression
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Geometric Progression
Answer: (b).Geometric Progression
Question 13. Which of the following is not the equation of state?
  1.    Van der waals Equation
  2.    Charles Equation
  3.    Holborn Equation
  4.    Peng Robinson Equation
 Discuss Question
Answer: Option B. -> Charles Equation
Answer: (b).Charles Equation
Question 14. A container has H₂ at 27°C and molar volume 1 liter/mole, if a = 9.24 atm(liter/mole), b = 0.0907 liter/mole, what is the temperature of H₂? (Use vander waal equation)
  1.    7.5 atm
  2.    12.4 atm
  3.    15.6 atm
  4.    17.8 atm
 Discuss Question
Answer: Option D. -> 17.8 atm
Answer: (d).17.8 atm
Question 15. A container has O₂ at 5 atm and molar volume 2 liter/mole, if a = 9.24 atm(liter/mole), b = 0.0907 liter/mole, what is the temperature of O₂? (Use vander waal equation)
  1.    140 K
  2.    150 K
  3.    170 K
  4.    190 K
 Discuss Question
Answer: Option C. -> 170 K
Answer: (c).170 K
Question 16. What is the pressure of CO₂ at 325 K, if it is given that pressure at 330 K is 6 Pa, and pressure at 320 K is 4 Pa?
  1.    4.5 Pa
  2.    5 Pa
  3.    5.5 Pa
  4.    6 Pa
 Discuss Question
Answer: Option B. -> 5 Pa
Answer: (b).5 Pa
Question 17. A liquid evaporates first at which of the following conditions?
  1.    High attraction forces
  2.    Low attraction forces
  3.    Low vapor pressure
  4.    High boiling point
 Discuss Question
Answer: Option B. -> Low attraction forces
Answer: (b).Low attraction forces
Question 18. At triple point, vapor pressure of ice is given by ln p* = 18 – 2560/T, and vapor pressure of water is given by ln p* = 28 – 5120/T, what is the temperature at triple point?
  1.    225 K
  2.    256 K
  3.    320 K
  4.    400 K
 Discuss Question
Answer: Option B. -> 256 K
Answer: (b).256 K
Question 19. At which of the following values of pressure a solid melts first?
  1.    5 atm
  2.    720 mm Hg
  3.    500 KPa
  4.    40 Torr
 Discuss Question
Answer: Option A. -> 5 atm
Answer: (a).5 atm
Question 20. Temperature of SO₂ at 5 Pa is 395 K and at 10 Pa temperature is 420 K, what is the temperature at 6 Pa?
  1.    400 K
  2.    405 K
  3.    410 K
  4.    415 K
 Discuss Question
Answer: Option A. -> 400 K
Answer: (a).400 K

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