What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, T_R (where, T₁ and T₂ are source & surrounding temperatures respectively.)?

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What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, T_R (where, T₁ and T₂ are source & surrounding temperatures respectively.)?

A. T_R/(T₂ - T_R) × (T₁ - T₂)/T₁

B. T_R/(T₂ - T_R) × T₁/(T₁ - T₂)

C. T_R/(T₁ - T_R) × (T₁ - T₂)/T₁

D. None of these

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The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T1. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

A. T₁/(T₁-T₂)

B. T₂/(T₁-T₂)

C. T₁/T₂

D. T₂/R₁

Discuss this answer

When a system is in equilibrium for all possible processes, the differential or finite change of entropy is

A. < 0

B. > 0

C. = 0

D. None of these

Discuss this answer

There is a change in __________ during the phase transition.

A. Volume

B. Pressure

C. Temperature

D. All a, b & c

Discuss this answer

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

A. Less

B. More

C. Same

D. Dependent on climatic conditions

Discuss this answer

Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system?

A. Expansion valve

B. Condenser

C. Refrigerator

D. Compressor

Discuss this answer

If atmospheric temperature and dew point are nearly equal, then the relative humidity is

A. Zero

B. 50%

C. Almost 100%

D. unpredictable

Discuss this answer

All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure.

A. Oxygen

B. Nitrogen

C. Air

D. Hydrogen

Discuss this answer

Kopp's rule is used to calculate the heat capacity of

A. Solids

B. Liquids

C. Gases

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

Discuss this answer

Pick out the wrong statement

A. Phase rule variables are intensive properties

B. Heat and work are both state function

C. The work done by expansion of a gas in vacuum is zero

D. C_P and C_V are state function

Discuss this answer

In Joule-Thomson porous plug experiment, the

A. Enthalpy does not remain constant

B. Entire apparatus is exposed to surroundings

C. Temperature remains constant

D. None of these

Discuss this answer

Specific/molar Gibbs free energy for a pure substance does not change during

A. Sublimation

B. Vaporisation

C. Melting

D. Either (A), (B) or (C)

Discuss this answer

Degree of freedom of a system consisting of a gaseous mixture of H2 and NH3 will be

A. 0

B. 1

C. 2

D. 3

Discuss this answer

Refrigeration cycle

A. Violates second law of thermodynamics

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

C. Both (A) and (B)

D. Neither (A) nor (B)

Discuss this answer

Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is

A. 0

B. 1

C. ∞

D. None of these

Discuss this answer

Internal energy is equal to the heat absorbed in case of a/an __________ process.

A. Constant volume

B. Polytropic

C. Adiabatic

D. Constant pressure

Discuss this answer

The energy of activation of exothermic reaction is

A. Zero

B. Negative

C. Very large compared to that for endothermic reaction

D. Not possible to predict

Discuss this answer

The variation of heat of reaction with temperature at constant pressure is given by the __________ law.

A. Kelvin's

B. Antoines

C. Kirchoffs

D. None of these

Discuss this answer

The shape of T-S diagram for Carnot Cycle is a

A. Rectangle

B. Rhombus

C. Trapezoid

D. Circle

Discuss this answer

Which of the following is not a common refrigerant?

A. Freon-12

B. Ethylene

C. Ammonia

D. Carbon dioxide

Discuss this answer

One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is

A. 30554

B. 10373

C. 4988.4

D. 4364.9

Discuss this answer

The principle applied in liquefaction of gases is

A. Adiabatic expansion

B. Joule-Thomson effect

C. Both (A) and (B)

D. Neither (A) nor (B)

Discuss this answer

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, T_R (where, T₁ and T₂ are source & surrounding temperatures respectively.)?

A. T_R/(T₂ - T_R) × (T₁ - T₂)/T₁

B. T_R/(T₂ - T_R) × T₁/(T₁ - T₂)

C. T_R/(T₁ - T_R) × (T₁ - T₂)/T₁

D. None of these

Discuss this answer

Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.

A. Below

B. At

C. Above

D. Either 'b' or 'c'

Discuss this answer

Which of the following has the minimum value of COP for a given refrigeration effect?

A. Reverse Carnot cycle

B. Ordinary vapour-compression cycle

C. Vapour-compression process with a reversible expansion engine

D. Air refrigeration cycle

Discuss this answer

If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

A. Volume

B. Enthalpy

C. Both (A) & (B)

D. Neither (A) nor (B)

Discuss this answer

Gibbs free energy of mixing at constant pressure and temperature is always

A. 0

B. ∞

C. + ve

D. - ve

Discuss this answer

Clausius-Clapeyron equation is applicable to __________ equilibrium processes.

A. Solid-vapor

B. Solid-liquid

C. Liquid-vapor

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

Discuss this answer

A refrigerator works on the principle of __________ law of thermodynamics.

A. Zeroth

B. First

C. Second

D. Third

Discuss this answer

Pick out the wrong statement.

A. Surface tension of a substance vanishes at critical point, as there is no distinction between liquid and vapour phases at its critical point

B. Entropy of a system decreases with the evolution of heat

C. Change of internal energy is negative for exothermic reactions

D. The eccentric factor for all materials is always more than one

Discuss this answer

Melting of wax is accompanied with __________ in entropy.

A. Increase

B. Decrease

C. No change

D. None of these

Discuss this answer

Accepted Answer

A. T_R/(T₂ - T_R) × (T₁ - T₂)/T₁

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, T_R (where, T₁ and T₂ are source & surrounding temperatures respectively.)?

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T1. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

When a system is in equilibrium for all possible processes, the differential or finite change of entropy is

There is a change in __________ during the phase transition.

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

Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system?

If atmospheric temperature and dew point are nearly equal, then the relative humidity is

All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure.

Kopp's rule is used to calculate the heat capacity of

Pick out the wrong statement

In Joule-Thomson porous plug experiment, the

Specific/molar Gibbs free energy for a pure substance does not change during

Degree of freedom of a system consisting of a gaseous mixture of H2 and NH3 will be

Refrigeration cycle

Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is

Internal energy is equal to the heat absorbed in case of a/an __________ process.

The energy of activation of exothermic reaction is

The variation of heat of reaction with temperature at constant pressure is given by the __________ law.

The shape of T-S diagram for Carnot Cycle is a

Which of the following is not a common refrigerant?

One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is

The principle applied in liquefaction of gases is

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, T_R (where, T₁ and T₂ are source & surrounding temperatures respectively.)?

Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.

Which of the following has the minimum value of COP for a given refrigeration effect?

If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

Gibbs free energy of mixing at constant pressure and temperature is always

Clausius-Clapeyron equation is applicable to __________ equilibrium processes.

A refrigerator works on the principle of __________ law of thermodynamics.

Pick out the wrong statement.

Melting of wax is accompanied with __________ in entropy.

Also checkout

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, TR (where, T1 and T2 are source & surrounding temperatures respectively.)?

Correct Answer :

Show all Chemical Engineering Thermodynamics MCQ

Related Questions

The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 - T2)/T1. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T1 and T2 is given by

When a system is in equilibrium for all possible processes, the differential or finite change of entropy is

There is a change in __________ during the phase transition.

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

Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system?

If atmospheric temperature and dew point are nearly equal, then the relative humidity is

All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure.

Kopp's rule is used to calculate the heat capacity of

Pick out the wrong statement

In Joule-Thomson porous plug experiment, the

Specific/molar Gibbs free energy for a pure substance does not change during

Degree of freedom of a system consisting of a gaseous mixture of H2 and NH3 will be

Refrigeration cycle

Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is

Internal energy is equal to the heat absorbed in case of a/an __________ process.

The energy of activation of exothermic reaction is

The variation of heat of reaction with temperature at constant pressure is given by the __________ law.

The shape of T-S diagram for Carnot Cycle is a

Which of the following is not a common refrigerant?

One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is

The principle applied in liquefaction of gases is

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, TR (where, T1 and T2 are source & surrounding temperatures respectively.)?

Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.

Which of the following has the minimum value of COP for a given refrigeration effect?

If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

Gibbs free energy of mixing at constant pressure and temperature is always

Clausius-Clapeyron equation is applicable to __________ equilibrium processes.

A refrigerator works on the principle of __________ law of thermodynamics.

Pick out the wrong statement.

Melting of wax is accompanied with __________ in entropy.

Also checkout

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, T_R (where, T₁ and T₂ are source & surrounding temperatures respectively.)?

The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T1. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, T_R (where, T₁ and T₂ are source & surrounding temperatures respectively.)?