98 + Mcqs in Two Phase Gas McqOptions

1.	2 mole of CH₄ reacts completely with excess air, if 25 liter of bone dry air is produced at 27°C and 5 atm, what is the humidity?
A.	45%
B.	80%
C.	95%
D.	143%
Answer» C. 95%

Discussion

2.	0.1 mole of CH₄ reacts completely with excess air, if 1 liter of bone dry air is produced at 27°C and 25 atm, what is the humidity?
A.	4%
B.	15%
C.	20%
D.	52%
Answer» D. 52%

Discussion

3.	What is the partial pressure of a 40% gas in a system with vapor pressure 1 mm Hg?
A.	0.2 mm Hg
B.	0.4 mm Hg
C.	0.6 mm Hg
D.	0.8 mm Hg
Answer» C. 0.6 mm Hg

Discussion

4.	What is the vapor pressure of 50% gas in a system with partial pressure 2 mm Hg?
A.	1 mm Hg
B.	2 mm Hg
C.	4 mm Hg
D.	8 mm Hg
Answer» D. 8 mm Hg

Discussion

5.	What is the fraction of gas in a system with partial pressure 2 mm Hg and vapor pressure 5 mm Hg?
A.	0.4
B.	0.5
C.	0.6
D.	0.8
Answer» B. 0.5

Discussion

6.	What is the partial pressure of 20% gas in a system with vapor pressure 10 mm Hg?
A.	2 mm Hg
B.	10 mm Hg
C.	50 mm Hg
D.	100 mm Hg
Answer» B. 10 mm Hg

Discussion

7.	What is the vapor pressure of 40% gas in a system with partial pressure 20 mm Hg?
A.	5 mm Hg
B.	10 mm Hg
C.	20 mm Hg
D.	50 mm Hg
Answer» E.

Discussion

8.	Q amount of heat is transferred to a system, which of the following is correct?
A.	Q > 0
B.	Q < 0
C.	Q = 0
D.	Cannot say
Answer» B. Q < 0

Discussion

9.	Temperature of a system is increased with no change in internal energy, if the work done by the system is 10 Joule, what amount of heat is taken out from the system?
A.	10 J
B.	– 10 J
C.	0
D.	5 J
Answer» C. 0

Discussion

10.	Ratio heat transferred from 37°C to a colder body and from that body to – 11°C is 2, what is the temperature of colder body if surface areas are same for all bodies?
A.	– 5°C
B.	– 3°C
C.	5°C
D.	9°C
Answer» D. 9°C

Discussion

11.	What is the degrees of freedom of a system with 5 phases and 5 components?
A.	1
B.	2
C.	3
D.	4
Answer» C. 3

Discussion

12.	What is the degree of freedom of a system with 2 phases and 1 component?
A.	1
B.	2
C.	3
D.	4
Answer» B. 2

Discussion

13.	What is the number of phases in a system with 2 degrees of freedom and 2 components?
A.	1
B.	2
C.	3
D.	4
Answer» C. 3

Discussion

14.	What is the number of components in a system with 3 degrees of freedom and 2 phases?
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

Discussion

15.	What is the degrees of freedom of a system with mixture of water and ice?
A.	1
B.	2
C.	3
D.	4
Answer» B. 2

Discussion

16.	What is the degrees of freedom of a system with pure water?
A.	2
B.	4
C.	5
D.	7
Answer» B. 4

Discussion

17.	What is the degrees of freedom of a system with mixture of water, liquid benzene and oxygen?
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

Discussion

18.	What is the degrees of freedom of a system with mixture of ice, water and neon?
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

Discussion

19.	What is the degrees of freedom of a system with mixture of copper pyrites, liquid benzene and helium?
A.	1
B.	2
C.	3
D.	4
Answer» C. 3

Discussion

20.	What is the degree of freedom of a gas mixture composed of CO₂, SO₂, SO₃, CH₄, H₂CO₃?
A.	2
B.	3
C.	5
D.	7
Answer» D. 7

Discussion

21.	What is the degree of freedom of a gas mixture composed of O₂, H₂O and H₂O₂?
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

Discussion

22.	What is the degree of freedom of a mixture composed Liquid H₂O, solid Br₂ and gaseous CO₂, NO₂?
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

Discussion

23.	What is the degree of freedom of a mixture composed of liquid O₂, gaseous H₂ and ice?
A.	1
B.	2
C.	3
D.	4
Answer» B. 2

Discussion

24.	Which of the following is called for the curves following isothermal adsorbtion?
A.	Adsorbtion isotherm
B.	Adsorbate isotherm
C.	Adsorbent isotherm
D.	Absorbent isotherm
Answer» B. Adsorbate isotherm

Discussion

25.	25 mole of CH₄ reacts completely with excess air, if 25 liter of bone dry air is produced at 27°C and 5 atm, what is the humidity?
A.	10%
B.	100%
C.	500%
D.	1000%
Answer» E.

Discussion

26.	What we call a process having constant volume throughout?
A.	Isobaric
B.	Isochoric
C.	Isothermal
D.	Adiabatic
Answer» C. Isothermal

Discussion

27.	What is the total pressure of a system having 40% O₂ with 5 atm partial pressure and 60% N₂ with 10 atm partial pressure?
A.	2 atm
B.	6 atm
C.	8 atm
D.	10 atm
Answer» D. 10 atm

Discussion

28.	A piston cylinder expands from 8 liter to 12 liter with external pressure of 900 Pa, what is the work done on the system?
A.	3.6 Joule
B.	– 3.6 Joule
C.	7.2 Joule
D.	– 7.2 Joule
Answer» C. 7.2 Joule

Discussion

29.	6 mole glucose reacts completely with excess air, if 25 liter of bone dry air is produced at 27°C and 20 atm, what is the humidity?
A.	20%
B.	80%
C.	145%
D.	180%
Answer» E.

Discussion

30.	What is the molal humidity of a gas with pressure of gas vapor 10 mm Hg and pressure of vapor free gas 20 mm Hg?
A.	25%
B.	50%
C.	100%
D.	200%
Answer» C. 100%

Discussion

31.	Which of the following process P-V work in highest?
A.	Second derivative is negative
B.	Second derivative is positive
C.	Second derivative is zero
D.	All of the mentioned
Answer» B. Second derivative is positive

Discussion

32.	Which of the following does not change in steady state system?
A.	Flow in rate
B.	Flow out rate
C.	Accumulation
D.	None of the mentioned
Answer» D. None of the mentioned

Discussion

33.	What is the fraction of a gas in a system at partial pressure 1 atm, if the 0.2 fraction of the same gas is at partial pressure 4 atm and 0.4 fraction at partial pressure 8 atm (Use Freundlich Isotherm)?
A.	0.1
B.	0.2
C.	0.4
D.	0.5
Answer» E.

Discussion

34.	What is the fraction of a gas in a system with partial pressure 10 mm Hg, H = 25 mm Hg?
A.	0.1
B.	0.2
C.	0.3
D.	0.4
Answer» E.

Discussion

35.	1 mole of CH₄ reacts completely with excess air, if 5 liter of bone dry air is produced at 27°C and 5 atm, what is the humidity?
A.	25%
B.	50%
C.	100%
D.	200%
Answer» E.

Discussion

36.	Which of the following is a state function?
A.	Work
B.	Entropy
C.	Heat
D.	None of the mentioned
Answer» C. Heat

Discussion

37.	Which of the following is a path function?
A.	Work
B.	Internal Energy
C.	Entropy
D.	None of the mentioned
Answer» B. Internal Energy

Discussion

38.	What is the partial pressure of a 70% gas in a system, if H = 5 mm Hg?
A.	3.5 mm Hg
B.	7 mm Hg
C.	14 mm Hg
D.	35 mm Hg
Answer» B. 7 mm Hg

Discussion

39.	Which of the following is equal to the product of humidity and mass of dry gas?
A.	Moles of water vapor
B.	Mass of water vapor
C.	Mass of gas vapor
D.	None of the mentioned
Answer» C. Mass of gas vapor

Discussion

40.	What is the humidity, if the mass of dry gas is 10 Kg and mass of water vapor is 5 Kg?
A.	25%
B.	50%
C.	100%
D.	200%
Answer» C. 100%

Discussion

41.	What is the degree of freedom of a gaseous mixture composed of CH₄, CO₂, H₂CO₃, H₂O and H₂O₂?
A.	1
B.	2
C.	3
D.	4
Answer» E.

Discussion

42.	What is the K value of a gas with partial pressure 10 atm and total pressure of the system is 50 atm?
A.	0.1
B.	0.2
C.	100
D.	500
Answer» C. 100

Discussion

43.	What is the degree of freedom of a system with 3 phases and 5 components?
A.	1
B.	2
C.	3
D.	4
Answer» E.

Discussion

44.	What is the relative saturation of a gas with partial pressure 10 mm Hg and vapor pressure 5 mm Hg?
A.	0.5
B.	1
C.	2
D.	4
Answer» D. 4

Discussion

45.	What is the relative humidity of a gas with partial pressure of water vapor is 5 mm Hg and vapor pressure 8 mm Hg?
A.	25%
B.	32.5%
C.	45%
D.	62.5%
Answer» E.

Discussion

46.	What is the relative saturation of a gas with partial pressure 38 mm Hg and vapor pressure 1 torr?
A.	0.05
B.	0.5
C.	2
D.	38
Answer» E.

Discussion

47.	What is the relative humidity of a gas with partial pressure of water vapor 360 Pa and vapor pressure 1 atm?
A.	100%
B.	225.1%
C.	355.4%
D.	405.9%
Answer» D. 405.9%

Discussion

48.	Which of the following is defined as the ratio of partial pressure and vapor pressure?
A.	Relative Humidity
B.	Molal Humidity
C.	Humidity
D.	None of the mentioned
Answer» B. Molal Humidity

Discussion

Explore topic-wise MCQs in Testing Subject.

2 mole of CH₄ reacts completely with excess air, if 25 liter of bone dry air is produced at 27°C and 5 atm, what is the humidity?

0.1 mole of CH₄ reacts completely with excess air, if 1 liter of bone dry air is produced at 27°C and 25 atm, what is the humidity?

What is the partial pressure of a 40% gas in a system with vapor pressure 1 mm Hg?

What is the vapor pressure of 50% gas in a system with partial pressure 2 mm Hg?

What is the fraction of gas in a system with partial pressure 2 mm Hg and vapor pressure 5 mm Hg?

What is the partial pressure of 20% gas in a system with vapor pressure 10 mm Hg?

What is the vapor pressure of 40% gas in a system with partial pressure 20 mm Hg?

Q amount of heat is transferred to a system, which of the following is correct?

Temperature of a system is increased with no change in internal energy, if the work done by the system is 10 Joule, what amount of heat is taken out from the system?

Ratio heat transferred from 37°C to a colder body and from that body to – 11°C is 2, what is the temperature of colder body if surface areas are same for all bodies?

What is the degrees of freedom of a system with 5 phases and 5 components?

What is the degree of freedom of a system with 2 phases and 1 component?

What is the number of phases in a system with 2 degrees of freedom and 2 components?

What is the number of components in a system with 3 degrees of freedom and 2 phases?

What is the degrees of freedom of a system with mixture of water and ice?

What is the degrees of freedom of a system with pure water?

What is the degrees of freedom of a system with mixture of water, liquid benzene and oxygen?

What is the degrees of freedom of a system with mixture of ice, water and neon?

What is the degrees of freedom of a system with mixture of copper pyrites, liquid benzene and helium?

What is the degree of freedom of a gas mixture composed of CO₂, SO₂, SO₃, CH₄, H₂CO₃?

What is the degree of freedom of a gas mixture composed of O₂, H₂O and H₂O₂?

What is the degree of freedom of a mixture composed Liquid H₂O, solid Br₂ and gaseous CO₂, NO₂?

What is the degree of freedom of a mixture composed of liquid O₂, gaseous H₂ and ice?

Which of the following is called for the curves following isothermal adsorbtion?

25 mole of CH₄ reacts completely with excess air, if 25 liter of bone dry air is produced at 27°C and 5 atm, what is the humidity?

What we call a process having constant volume throughout?

What is the total pressure of a system having 40% O₂ with 5 atm partial pressure and 60% N₂ with 10 atm partial pressure?

A piston cylinder expands from 8 liter to 12 liter with external pressure of 900 Pa, what is the work done on the system?

6 mole glucose reacts completely with excess air, if 25 liter of bone dry air is produced at 27°C and 20 atm, what is the humidity?

What is the molal humidity of a gas with pressure of gas vapor 10 mm Hg and pressure of vapor free gas 20 mm Hg?

Which of the following process P-V work in highest?

Which of the following does not change in steady state system?

What is the fraction of a gas in a system at partial pressure 1 atm, if the 0.2 fraction of the same gas is at partial pressure 4 atm and 0.4 fraction at partial pressure 8 atm (Use Freundlich Isotherm)?

What is the fraction of a gas in a system with partial pressure 10 mm Hg, H = 25 mm Hg?

1 mole of CH₄ reacts completely with excess air, if 5 liter of bone dry air is produced at 27°C and 5 atm, what is the humidity?

Which of the following is a state function?

Which of the following is a path function?

What is the partial pressure of a 70% gas in a system, if H = 5 mm Hg?

Which of the following is equal to the product of humidity and mass of dry gas?

What is the humidity, if the mass of dry gas is 10 Kg and mass of water vapor is 5 Kg?

What is the degree of freedom of a gaseous mixture composed of CH₄, CO₂, H₂CO₃, H₂O and H₂O₂?

What is the K value of a gas with partial pressure 10 atm and total pressure of the system is 50 atm?

What is the degree of freedom of a system with 3 phases and 5 components?

What is the relative saturation of a gas with partial pressure 10 mm Hg and vapor pressure 5 mm Hg?

What is the relative humidity of a gas with partial pressure of water vapor is 5 mm Hg and vapor pressure 8 mm Hg?

What is the relative saturation of a gas with partial pressure 38 mm Hg and vapor pressure 1 torr?

What is the relative humidity of a gas with partial pressure of water vapor 360 Pa and vapor pressure 1 atm?

Which of the following is defined as the ratio of partial pressure and vapor pressure?