The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

Question

The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

A. Less

B. More

C. Same

Correct Answer :

A. Less

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Comment

Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is

A. 1

B. 2

C. 3

D. 4

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A system is said to be at equilibrium, if the entropy of the system has reached __________ value.

B. Zero

Discuss this answer

The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point.

B. Triple

D. Boyle

Discuss this answer

First law of thermodynamics is mathematically stated as

Discuss this answer

Pick out the wrong statement.

Discuss this answer

The chemical potential of a component (μi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by

Discuss this answer

C_v for an ideal gas

Discuss this answer

__________ law of thermodynamics ascertains the direction of a particular spontaneous process.

A. Zeroth

B. First

C. Second

D. Third

Discuss this answer

Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as

Discuss this answer

If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

A. 100

B. 50

C. 205

D. 200

Discuss this answer

Pick out the correct statement.

Discuss this answer

Change of state namely evaporation condensation, freezing and melting is an __________ process.

Discuss this answer

Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = C_p/C_v = 7/5) and the process to be reversible, is

Discuss this answer

Pick out the wrong statement.

Discuss this answer

Pick out the extensive property out of the following.

Discuss this answer

When a gas is subjected to adiabatic expansion, it gets cooled due to

Discuss this answer

The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

D. T ln K

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The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nC_v ln (T₂/T₁) is valid for

Discuss this answer

The expression, nRT ln(P₁/P₂), is for the __________of an ideal gas.

Discuss this answer

Throttling process is a/an __________ process.

Discuss this answer

Entropy of an ideal gas depends upon its

Discuss this answer

The temperature at which both liquid and gas phases are identical, is called the __________ point.

B. Triple

Discuss this answer

Pick out the wrong statement pertaining to the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂.Degree of dissociation of PCl₅ will

Discuss this answer

Which one is true for a throttling process?

Discuss this answer

Pick out the wrong statement.

Discuss this answer

Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the

Discuss this answer

Refrigeration cycle

Discuss this answer

A gas can be liquefied by pressure alone only, when its temperature is __________ its critical temperature.

Discuss this answer

Chemical potential of ith component of a system is given by

Discuss this answer

Domestic refrigerator usually works on the __________ refrigeration cycle.

A. Carnot

B. Air

Discuss this answer

Answer 1

D. Dependent on climatic conditions

Answer 2

A. Minimum

Answer 3

C. Maximum

Answer 4

D. None of these

Answer 5

A. Freezing

Answer 6

C. Boiling

Answer 7

A. dQ = dE + dW

Answer 8

B. dQ = dE - dW

Answer 9

C. dE = dQ + dW

Answer 10

D. dW = dQ + dE

Answer 11

A. Activity co-efficient is dimensionless.

Answer 12

B. In case of an ideal gas, the fugacity is equal to its pressure.

Answer 13

C. In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the component.

Answer 14

D. The fugacity co-efficient is zero for an ideal gas

Answer 15

A. (∂E/∂n_i)_{S, v, nj}

Answer 16

B. (∂G/∂n_i)_{T, P, nj} = (∂A/∂ni) _{T, v, nj}

Answer 17

C. (∂H/∂n_i)_{S, P, nj}

Answer 18

D. All (A), (B) and (C)

Answer 19

A. Does not depend upon temperature

Answer 20

B. Is independent of pressure only

Answer 21

C. Is independent of volume only

Answer 22

D. Is independent of both pressure and volume

Answer 23

A. P + F - C = 2

Answer 24

B. C = P - F + 2

Answer 25

C. F = C - P - 2

Answer 26

D. P = F - C - 2

Answer 27

A. The available energy in an isolated system for all irreversible (real) processes decreases

Answer 28

B. The efficiency of a Carnot engine increases, if the sink temperature is decreased

Answer 29

C. The reversible work for compression in non-flow process under isothermal condition is the change in Helmholtz free energy

Answer 30

D. All (A), (B) and (C)

Answer 31

A. Isothermal

Answer 32

B. Adiabatic

Answer 33

C. Isobaric

Answer 34

D. Isochoric

Answer 35

A. 300 × (3^2/7)

Answer 36

B. 300 × (3^3/5)

Answer 37

C. 300 × (33^3/7)

Answer 38

D. 300 × (3^5/7)

Answer 39

A. An ideal liquid or solid solution is defined as one in which each component obeys Raoult's law

Answer 40

B. If Raoult's law is applied to one component of a binary mixture; Henry's law or Raoult's law is applied to the other component also

Answer 41

C. Henry's law is rigorously correct in the limit of infinite dilution

Answer 42

D. None of these

Answer 43

A. Surface tension

Answer 44

B. Free energy

Answer 45

C. Specific heat

Answer 46

D. Refractive index

Answer 47

A. Decrease in velocity

Answer 48

B. Decrease in temperature

Answer 49

C. Decrease in kinetic energy

Answer 50

D. Energy spent in doing work

Answer 51

A. RT ln K

Answer 52

B. -RT ln K

Answer 53

C. -R ln K

Answer 54

A. Reversible isothermal volume change

Answer 55

B. Heating of a substance

Answer 56

C. Cooling of a substance

Answer 57

D. Simultaneous heating and expansion of an ideal gas

Answer 58

A. Compressibility

Answer 59

B. Work done under adiabatic condition

Answer 60

C. Work done under isothermal condition

Answer 61

D. Co-efficient of thermal expansion

Answer 62

A. Reversible and isothermal

Answer 63

B. Irreversible and constant enthalpy

Answer 64

C. Reversible and constant entropy

Answer 65

D. Reversible and constant enthalpy

Answer 66

A. Pressure

Answer 67

B. Temperature

Answer 68

C. Both (A) & (B)

Answer 69

D. Neither (A) nor (B)

Answer 70

A. Critical

Answer 71

C. Freezing

Answer 72

D. Boiling

Answer 73

A. Decrease on addition of Cl₂

Answer 74

B. Increase on addition of an inert gas at constant pressure

Answer 75

C. Decrease on increasing the pressure of the system

Answer 76

D. None of these

Answer 77

A. A gas may have more than one inversion temperatures

Answer 78

B. The inversion temperature is different for different gases

Answer 79

C. The inversion temperature is same for all gases

Answer 80

D. The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity

Answer 81

A. The chemical potential of a pure substance depends upon the temperature and pressure

Answer 82

B. The chemical potential of a component in a system is directly proportional to the escaping tendency of that component

Answer 83

C. The chemical potential of ith species (μ_i) in an ideal gas mixture approaches zero as the pressure or mole fraction (x_i) tends to be zero at constant temperature

Answer 84

D. The chemical potential of species 'i' in the mixture (μ_i) is mathematically represented as,μ_i = ∂(nG)/∂ni]_T,P,nj where, n, n_i and n_j respectively denote the total number of moles, moles of i^th species and all mole numbers except ith species. 'G' is Gibbs molar free energy

Answer 85

A. Two temperatures only

Answer 86

B. Pressure of working fluid

Answer 87

C. Mass of the working fluid

Answer 88

D. Mass and pressure both of the working fluid

Answer 89

A. Violates second law of thermodynamics

Answer 90

B. Involves transfer of heat from low temperature to high temperature

Answer 91

C. Both (A) and (B)

Answer 92

D. Neither (A) nor (B)

Answer 93

A. Less than

Answer 94

B. More than

Answer 95

C. Equal to or higher than

Answer 96

D. Less than or equal to

Answer 97

A. μ_i = (∂F/∂n_i)_{T, P, ni}

Answer 98

B. μ_i = (∂A/∂n_i)_{T, P, ni}

Answer 99

C. μ_i = (∂F/∂n_i)_{T, P}

Answer 100

D. μ_i = (∂A/∂n_i)_{T, P}

Answer 101

C. Absorption

Answer 102

D. vapour-ejection

The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

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Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is

A system is said to be at equilibrium, if the entropy of the system has reached __________ value.

The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point.

First law of thermodynamics is mathematically stated as

Pick out the wrong statement.

The chemical potential of a component (μi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by

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__________ law of thermodynamics ascertains the direction of a particular spontaneous process.

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Pick out the correct statement.

Change of state namely evaporation condensation, freezing and melting is an __________ process.

Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = C_p/C_v = 7/5) and the process to be reversible, is

Pick out the wrong statement.

Pick out the extensive property out of the following.

When a gas is subjected to adiabatic expansion, it gets cooled due to

The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nC_v ln (T₂/T₁) is valid for

The expression, nRT ln(P₁/P₂), is for the __________of an ideal gas.

Throttling process is a/an __________ process.

Entropy of an ideal gas depends upon its

The temperature at which both liquid and gas phases are identical, is called the __________ point.

Pick out the wrong statement pertaining to the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂.Degree of dissociation of PCl₅ will

Which one is true for a throttling process?

Pick out the wrong statement.

Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the

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The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is

A system is said to be at equilibrium, if the entropy of the system has reached __________ value.

The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point.

First law of thermodynamics is mathematically stated as

Pick out the wrong statement.

The chemical potential of a component (μi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by

Cv for an ideal gas

__________ law of thermodynamics ascertains the direction of a particular spontaneous process.

Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as

If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

Pick out the correct statement.

Change of state namely evaporation condensation, freezing and melting is an __________ process.

Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is

Pick out the wrong statement.

Pick out the extensive property out of the following.

When a gas is subjected to adiabatic expansion, it gets cooled due to

The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for

The expression, nRT ln(P1/P2), is for the __________of an ideal gas.

Throttling process is a/an __________ process.

Entropy of an ideal gas depends upon its

The temperature at which both liquid and gas phases are identical, is called the __________ point.

Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 PCl3 + Cl2.Degree of dissociation of PCl5 will

Which one is true for a throttling process?

Pick out the wrong statement.

Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the

Refrigeration cycle

A gas can be liquefied by pressure alone only, when its temperature is __________ its critical temperature.

Chemical potential of ith component of a system is given by

Domestic refrigerator usually works on the __________ refrigeration cycle.

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Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = C_p/C_v = 7/5) and the process to be reversible, is

The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nC_v ln (T₂/T₁) is valid for

The expression, nRT ln(P₁/P₂), is for the __________of an ideal gas.

Pick out the wrong statement pertaining to the decomposition of PCl₅ represented by, PCl₅ PCl₃ + Cl₂.Degree of dissociation of PCl₅ will