Equations of state provide the linkage between ___________ and ____________

Differential, Integral equations

Conservative, non-conservative equation

Energy equation, mass and momentum equations

Differential, Integral equations

Which is/are the conservation laws that are enough to solve a complete fluid problem?

Energy and momentum conservation

Fluid velocity is very high. Will thermodynamic equilibrium be applicable to fluid flows?

Yes, the external conditions help them stay in thermodynamic equilibrium

No, their flow properties change abruptly

No, they are influenced by external conditions

Yes, the fluid can thermodynamically adjust itself quickly to be in thermodynamic equilibrium

Among the unknowns of a flow field, some of the properties are given below. Which set contains only thermodynamic properties?

Density, velocity, specific internal energy, temperature

Density, pressure, specific internal energy, temperature

Density, velocity, specific internal energy, temperature

Velocity, pressure, specific internal energy, temperature

Density, pressure, specific internal energy, Velocity

For the ideal gas equation, what assumptions are made?

there is little or no attraction between the molecules of the gas

the volume occupied by the molecules is negligibly small compared to the volume of the gas

What is the unit of ‘a’ in RK equation?

Atm(liter/mole)K0.5d) Atm(liter/mole)KView answer

A container has H2 at 27oC 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)

, b = 0.0907 liter/mole, what is the temperature of H2? (Use vander waal equation)a) 7.5 atmb) 12.4 atmc) 15.6 atmd) 17.8 atmView answer

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)

, b = 0.0907 liter/mole, what is the temperature of O2? (Use vander waal equation)a) 140 Kb) 150 Kc) 170 Kd) 190 KView answer

Which of the following statement is true about the correction terms?

the coefficient a was introduced to account for the existence of mutual attraction between the molecules

the term a/(v2) is called the force of cohesion

the coefficient b was introduced to account for the volumes of the molecules and is known as co-volume

When does a real gas obey the ideal gas equation closely?

at low pressure and temperature

at high pressure and low temperature

at low pressure and high temperature

at low pressure and temperature

at high pressure and temperature

40 + Mcqs in Equations State in Chemical Engineering Page 1 McqOptions

1.	Equations of state provide the linkage between ___________ and ____________
A.	Conservative, non-conservative equation
B.	Eulerian, Lagrangian equations
C.	Energy equation, mass and momentum equations
D.	Differential, Integral equations
Answer» D. Differential, Integral equations

Discussion

2.	Energy conservation equation is necessary to solve this property of fluid flow.
A.	Pressure
B.	Temperature
C.	Density
D.	Velocity
Answer» C. Density

Discussion

3.	Which is/are the conservation laws that are enough to solve a complete fluid problem?
A.	Energy and momentum conservation
B.	Mass and energy conservation
C.	Mass and momentum conservation
D.	Mass equation
Answer» D. Mass equation

Discussion

4.	Let,ρ → DensityT → Temperaturei → Specific internal energyHow can we represent i of a perfect gas in terms of ρ and/or T?
A.	i=T
B.	i ∝ (1/T)
C.	i=(1/T)
D.	i ∝ T
Answer» E.

Discussion

5.	Let,ρ → Densityp → PressureT → TemperatureHow can we represent p of a perfect gas in terms of ρ and/or T?
A.	p=ρ RT
B.	p=RT
C.	p=ρ T
D.	p=ρ R
Answer» B. p=RT

Discussion

6.	We can describe the state of a substance in thermodynamic equilibrium using two state variables. What are these two variables?
A.	Density and temperature
B.	Density and pressure
C.	Pressure and Temperature
D.	Velocity and Temperature
Answer» B. Density and pressure

Discussion

7.	Fluid velocity is very high. Will thermodynamic equilibrium be applicable to fluid flows?
A.	Yes, the external conditions help them stay in thermodynamic equilibrium
B.	No, their flow properties change abruptly
C.	No, they are influenced by external conditions
D.	Yes, the fluid can thermodynamically adjust itself quickly to be in thermodynamic equilibrium
Answer» E.

Discussion

8.	Relationship between thermodynamic variables of a flow field can be obtained through ___________
A.	Momentum conservation
B.	Thermodynamic equilibrium
C.	Energy equations
D.	Zeroth law of thermodynamics
Answer» C. Energy equations

Discussion

9.	Among the unknowns of a flow field, some of the properties are given below. Which set contains only thermodynamic properties?
A.	Density, pressure, specific internal energy, temperature
B.	Density, velocity, specific internal energy, temperature
C.	Velocity, pressure, specific internal energy, temperature
D.	Density, pressure, specific internal energy, Velocity
Answer» B. Density, velocity, specific internal energy, temperature

Discussion

10.	How many equations are related to solving a flow field?
A.	2
B.	3
C.	5
D.	4
Answer» D. 4

Discussion

11.	The magnitude of Z at a particular pressure and temperature indicates the extent of deviation of the gas from the ideal gas behaviour.
A.	true
B.	false
Answer» B. false

Discussion

12.	For an ideal gas, Z has the value
A.	0
B.	2
C.	1
D.	infinity
Answer» D. infinity

Discussion

13.	Compressibility factor Z is given by
A.	RT/pv
B.	pv/RT
C.	(RT/pv)2
D.	(pv/RT)2
Answer» C. (RT/pv)2

Discussion

14.	For the ideal gas equation, what assumptions are made?
A.	there is little or no attraction between the molecules of the gas
B.	the volume occupied by the molecules is negligibly small compared to the volume of the gas
C.	both of the mentioned
D.	none of the mentioned
Answer» D. none of the mentioned

Discussion

15.	What is the unit of ‘a’ in RK equation?
A.	Liter/mole
B.	Atm(liter/mole)
C.	Atm(liter/mole)K0.5
D.	Atm(liter/mol
E.	Atm(liter/mole)K0.5d) Atm(liter/mole)KView answer
Answer» D. Atm(liter/mol

Discussion

16.	What is the unit of λ in the SRK equation?
A.	Liter/mole
B.	Mole/Liter
C.	Atm(liter/mole)
D.	It is dimensionlessView answer
E.	It is dimensionlessView answer
Answer» E. It is dimensionlessView answer

Discussion

17.	What is the unit of ‘b’ in Peng Robinson equation?
A.	Liter/mole
B.	Liter2/mole2
C.	Mole/Liter
D.	Mole2/Liter2View answer
Answer» B. Liter2/mole2

Discussion

18.	A container is filled with a gas at 10 atm with molar volume 1 liter/mole, if B = – 0.053 liter/mole, C = 0.0026 liter2/mole2, what is the temperature of gas? (Use virial equation, neglect higher terms)
A.	128.2 K
B.	156.9 K
C.	198.5 K
D.	243.6 KView answer
Answer» B. 156.9 K

Discussion

19.	What is the pressure of CO2 at 0oC, molar volume = 4 liter/mole, if B = – 0.053 liter/mole, C = 0.0026 liter2/mole2? (Use virial equation, neglect higher terms)
A.	2.4 atm
B.	4.1 atm
C.	5.5 atm
D.	6.9 atmView answer
Answer» D. 6.9 atmView answer

Discussion

20.	A container has H2 at 27oC 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)
A.	7.5 atm
B.	12.4 atm
C.	15.6 atm
D.	17.8 atmView answer
E.	, b = 0.0907 liter/mole, what is the temperature of H2? (Use vander waal equation)a) 7.5 atmb) 12.4 atmc) 15.6 atmd) 17.8 atmView answer
Answer» E. , b = 0.0907 liter/mole, what is the temperature of H2? (Use vander waal equation)a) 7.5 atmb) 12.4 atmc) 15.6 atmd) 17.8 atmView answer

Discussion

21.	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)
A.	140 K
B.	150 K
C.	170 K
D.	190 KView answer
E.	, b = 0.0907 liter/mole, what is the temperature of O2? (Use vander waal equation)a) 140 Kb) 150 Kc) 170 Kd) 190 KView answer
Answer» D. 190 KView answer

Discussion

22.	WHAT_IS_THE_UNIT_OF_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ‚Â§A‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•_IN_RK_EQUATION??$#
A.	Liter/mole
B.	Atm(liter/mole)
C.	Atm(liter/mole)K<sup>0.5</sup>
D.	Atm(liter/mole)K
Answer» D. Atm(liter/mole)K

Discussion

23.	FOR_AN_IDEAL_GAS,_Z_HAS_THE_VALUE?$
A.	0
B.	2
C.	1
D.	infinity
Answer» D. infinity

Discussion

24.	The magnitude of Z at a particular pressure and temperature indicates the extent of deviation of the gas from the ideal gas behaviour.$
A.	true
B.	false
Answer» B. false

Discussion

25.	What is the unit of ‚âà√≠¬¨‚Ñ¢ in the SRK equation?#
A.	Liter/mole
B.	Mole/Liter
C.	Atm(liter/mole)
D.	It is dimensionless
Answer» E.

Discussion

26.	Compressibility factor Z is given b?
A.	RT/pv
B.	pv/RT
C.	(RT/pv)<sup>2</sup>
D.	(pv/RT)<sup>2</sup>
Answer» C. (RT/pv)<sup>2</sup>

Discussion

27.	What is the unit of ‚Äö√Ñ√∂‚àö√ë‚àö‚â§b‚Äö√Ñ√∂‚àö√ë‚àö¬• in Peng Robinson equation?$
A.	Liter/mole
B.	Liter<sup>2</sup>/mole<sup>2</sup>
C.	Mole/Liter
D.	Mole<sup>2</sup>/Liter<sup>2</sup>
Answer» B. Liter<sup>2</sup>/mole<sup>2</sup>

Discussion

28.	The following also gave two-constant equations of state.
A.	Berthelot
B.	Dieterici
C.	Redlich-Kwong
D.	all of the mentioned
Answer» E.

Discussion

29.	A container is filled with a gas at 10 atm with molar volume 1 liter/mole, if B = ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.053 liter/mole, C = 0.0026 liter²/mole², what is the temperature of gas? (Use virial equation, neglect higher terms)$
A.	128.2 K
B.	156.9 K
C.	198.5 K
D.	243.6 K
Answer» B. 156.9 K

Discussion

30.	Real gases conform more closely with the van der Waals equation of state than the ideal gas equation of state.
A.	true
B.	false
Answer» B. false

Discussion

31.	What is the pressure of CO₂ at 0^oC, molar volume = 4 liter/mole, if B = ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.053 liter/mole, C = 0.0026 liter²/mole²? (Use virial equation, neglect higher terms)$
A.	2.4 atm
B.	4.1 atm
C.	5.5 atm
D.	6.9 atm
Answer» D. 6.9 atm

Discussion

32.	Which of the following statement is true about the correction terms?
A.	the coefficient a was introduced to account for the existence of mutual attraction between the molecules
B.	the term a/(v<sup>2</sup>) is called the force of cohesion
C.	the coefficient b was introduced to account for the volumes of the molecules and is known as co-volume
D.	all of the mentioned
Answer» E.

Discussion

33.	A container has H₂ at 27^oC 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)
A.	7.5 atm
B.	12.4 atm
C.	15.6 atm
D.	17.8 atm
Answer» E.

Discussion

34.	The corrected gas equation is given by
A.	(p+a/(v<sup>2</sup>))(v+b)=RT
B.	(p-a/(v<sup>2</sup>))(v-b)=RT
C.	(p-a/(v<sup>2</sup>))(v+b)=RT
D.	(p+a/(v<sup>2</sup>))(v-b)=RT
Answer» E.

Discussion

35.	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)
A.	140 K
B.	150 K
C.	170 K
D.	190 K
Answer» D. 190 K

Discussion

36.	The real gases deviate from the ideal gas equation when the pressure increases.
A.	true
B.	false
Answer» B. false

Discussion

37.	If the vander waal equation has only one root, what is the relation between a and b?
A.	729a = pb<sup>2</sup>
B.	243a = pb<sup>2</sup>
C.	81a = pb<sup>2</sup>
D.	9a = pb<sup>2</sup>
Answer» B. 243a = pb<sup>2</sup>

Discussion

38.	When does a real gas obey the ideal gas equation closely?
A.	at high pressure and low temperature
B.	at low pressure and high temperature
C.	at low pressure and temperature
D.	at high pressure and temperature
Answer» C. at low pressure and temperature

Discussion

39.	Virial Equation is a ______
A.	Arithmetic Progression
B.	Geometric Progression
C.	Harmonic Progression
D.	None of the mentioned
Answer» C. Harmonic Progression

Discussion

40.	Which of the following is not the equation of state?
A.	Van der Waals Equation
B.	Charles Equation
C.	Holborn Equation
D.	Peng Robinson Equation
Answer» C. Holborn Equation

Discussion

Explore topic-wise MCQs in Chemical Engineering.

Equations of state provide the linkage between ___________ and ____________

Energy conservation equation is necessary to solve this property of fluid flow.

Which is/are the conservation laws that are enough to solve a complete fluid problem?

Let,ρ → DensityT → Temperaturei → Specific internal energyHow can we represent i of a perfect gas in terms of ρ and/or T?

Let,ρ → Densityp → PressureT → TemperatureHow can we represent p of a perfect gas in terms of ρ and/or T?

We can describe the state of a substance in thermodynamic equilibrium using two state variables. What are these two variables?

Fluid velocity is very high. Will thermodynamic equilibrium be applicable to fluid flows?

Relationship between thermodynamic variables of a flow field can be obtained through ___________

Among the unknowns of a flow field, some of the properties are given below. Which set contains only thermodynamic properties?

How many equations are related to solving a flow field?

The magnitude of Z at a particular pressure and temperature indicates the extent of deviation of the gas from the ideal gas behaviour.

For an ideal gas, Z has the value

Compressibility factor Z is given by

For the ideal gas equation, what assumptions are made?

What is the unit of ‘a’ in RK equation?

What is the unit of λ in the SRK equation?

What is the unit of ‘b’ in Peng Robinson equation?

A container is filled with a gas at 10 atm with molar volume 1 liter/mole, if B = – 0.053 liter/mole, C = 0.0026 liter2/mole2, what is the temperature of gas? (Use virial equation, neglect higher terms)

What is the pressure of CO2 at 0oC, molar volume = 4 liter/mole, if B = – 0.053 liter/mole, C = 0.0026 liter2/mole2? (Use virial equation, neglect higher terms)

A container has H2 at 27oC 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)

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)

WHAT_IS_THE_UNIT_OF_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ‚Â§A‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•_IN_RK_EQUATION??$#

FOR_AN_IDEAL_GAS,_Z_HAS_THE_VALUE?$

The magnitude of Z at a particular pressure and temperature indicates the extent of deviation of the gas from the ideal gas behaviour.$

What is the unit of ‚âà√≠¬¨‚Ñ¢ in the SRK equation?#

Compressibility factor Z is given b?

What is the unit of ‚Äö√Ñ√∂‚àö√ë‚àö‚â§b‚Äö√Ñ√∂‚àö√ë‚àö¬• in Peng Robinson equation?$

The following also gave two-constant equations of state.

A container is filled with a gas at 10 atm with molar volume 1 liter/mole, if B = ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.053 liter/mole, C = 0.0026 liter2/mole2, what is the temperature of gas? (Use virial equation, neglect higher terms)$

Real gases conform more closely with the van der Waals equation of state than the ideal gas equation of state.

What is the pressure of CO2 at 0oC, molar volume = 4 liter/mole, if B = ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.053 liter/mole, C = 0.0026 liter2/mole2? (Use virial equation, neglect higher terms)$

Which of the following statement is true about the correction terms?

A container has H2 at 27oC 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)

The corrected gas equation is given by

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)

The real gases deviate from the ideal gas equation when the pressure increases.

If the vander waal equation has only one root, what is the relation between a and b?

When does a real gas obey the ideal gas equation closely?

Virial Equation is a ______

Which of the following is not the equation of state?

Equations of state provide the linkage between _ and __

A container is filled with a gas at 10 atm with molar volume 1 liter/mole, if B = ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.053 liter/mole, C = 0.0026 liter²/mole², what is the temperature of gas? (Use virial equation, neglect higher terms)$

What is the pressure of CO₂ at 0^oC, molar volume = 4 liter/mole, if B = ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.053 liter/mole, C = 0.0026 liter²/mole²? (Use virial equation, neglect higher terms)$

A container has H₂ at 27^oC 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)

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)