Which one is true for a throttling process?

A A gas may have more than one inversion temperatures
B The inversion temperature is different for different gases
C The inversion temperature is same for all gases
D The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity

Correct Answer: The inversion temperature is different for different gases

Different gases will have different inversion temperatures usually the hydrogen and helium will have very low maximum inversion temperatures so, cooling by using throttling for these gases is slightly difficult.
Bissoy MCQ
#Chemical Engineering #Chemical Engineering Thermodynamics

Related Questions

The throttling process is __________ process.
A Reversible
B Irreversible
C Reversible or irreversible
D None of these
Joule-Thomson effect i.e., a throttling process is a constant __________ process.
A Entropy
B Temperature
C Internal energy
D Enthalpy
Throttling (Joule-Thomson effect) process is a constant __________ process.
A Enthalpy
B Entropy
C Pressure
D None of these
The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called
A Sub-cooling or under-cooling
B Super-cooling
C Normal cooling
D None of these
Throttling process is a/an __________ process.
A Reversible and isothermal
B Irreversible and constant enthalpy
C Reversible and constant entropy
D Reversible and constant enthalpy
The adiabatic throttling process of a perfect gas is one of constant enthalpy
A In which there is a temperature drop
B Which is exemplified by a non-steady flow expansion
C Which can be performed in a pipe with a constriction
D In which there is an increase in temperature
All gases above its inversion temperature, in a throttling process will show
A A heating effect
B No change in temperature
C A cooling effect
D Either A or C
During throttling process
A Heat exchange does not take place
B No work is done by expanding steam
C There is no change of internal energy of steam
D All of the above
In a throttling process
A Steam temperature remains constant
B Steam pressure remains constant
C Steam enthalpy remains constant
D Steam entropy remains constant
On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by
A Horizontal straight line
B Vertical straight line
C Straight inclined line
D Curved line

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