In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in

Chemical Engineering Thermodynamics
In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in

Enhanced COP

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

No change in the value of COP

Enhanced COP

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

No change in the value of COP

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Chemical Engineering Thermodynamics
Which of the following is not a reversible process ?

Expansion of an ideal gas against constant pressure

None of these

Solution of NaCl in water at 50°C

Atmospheric pressure vaporisation of water at 100°C

Expansion of an ideal gas against constant pressure

None of these

Solution of NaCl in water at 50°C

Atmospheric pressure vaporisation of water at 100°C

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Chemical Engineering Thermodynamics
For a real gas, the chemical potential is given by

None of these

RT dlnP

R dlnf

RT dlnf

None of these

RT dlnP

R dlnf

RT dlnf

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Chemical Engineering Thermodynamics
4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is

Zero

∞

8 J

4 J

Zero

∞

8 J

4 J

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Chemical Engineering Thermodynamics
Which of the following is an extensive property of a system?

Pressure

Molal heat capacity

Heat capacity

Concentration

Pressure

Molal heat capacity

Heat capacity

Concentration

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Chemical Engineering Thermodynamics
In polytropic process (PVn = constant), if n = 1; it means a/an __________ process.

Adiabatic

Isothermal

Reversible

None of these

Adiabatic

Isothermal

Reversible

None of these

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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in

Chemical Engineering Thermodynamics Which of the following is not a reversible process ?

Chemical Engineering Thermodynamics For a real gas, the chemical potential is given by

Chemical Engineering Thermodynamics 4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is

Chemical Engineering Thermodynamics Which of the following is an extensive property of a system?

Chemical Engineering Thermodynamics In polytropic process (PVn = constant), if n = 1; it means a/an __________ process.

Chemical Engineering Thermodynamics
In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in

Chemical Engineering Thermodynamics
Which of the following is not a reversible process ?

Chemical Engineering Thermodynamics
For a real gas, the chemical potential is given by

Chemical Engineering Thermodynamics
4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is

Chemical Engineering Thermodynamics
Which of the following is an extensive property of a system?

Chemical Engineering Thermodynamics
In polytropic process (PVn = constant), if n = 1; it means a/an __________ process.