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Thermodynamics for Chemical

Which of the following will increase the volume of a real gas by four times ?

Thermodynamics for Chemical /
Which of the following will increase the volume of a real gas by four times ?

A. Doubling the absolute temperature as well as pressure of the gas
B. Reducing pressure to one fourth at constant temperature
C. Reducing temperature to one fourth at constant pressure
D. Reducing the temperature to half and doubling the pressure

Which of the following will increase the volume of a real gas by four times ? Read More »

Thermodynamics for Chemical

Compressibility factor for almost all the gases are approximately same at the same__________________?

Thermodynamics for Chemical /
Compressibility factor for almost all the gases are approximately same at the same__________________?

A. Pressure and temperature
B. Reduced pressure and reduced temperature
C. Critical pressure and critical temperature
D. None of these

Compressibility factor for almost all the gases are approximately same at the same__________________? Read More »

Thermodynamics for Chemical

High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?

Thermodynamics for Chemical /
High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?

A. Δ H = 0 and ΔS = 0
B. Δ H ≠ 0 and ΔS = 0
C. Δ H ≠ 0 and ΔS ≠ 0
D. Δ H = 0 and ΔS ≠ 0

High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ? Read More »

Thermodynamics for Chemical

Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a _____________ vapour?

Thermodynamics for Chemical /
Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a _____________ vapour?

A. Superheated
B. Desuperheated
C. Non-condensable
D. None of these

Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a _____________ vapour? Read More »

Thermodynamics for Chemical

The third law of thermodynamics states that the__________________?

Thermodynamics for Chemical /
The third law of thermodynamics states that the__________________?

A. Heat capacity of a crystalline solid is zero at absolute zero temperature
B. Heat transfer from low temperature to high temperature source is not possible without external
work
C. Gases having same reduced properties behaves similarly
D. None of these

The third law of thermodynamics states that the__________________? Read More »

Thermodynamics for Chemical

Which of the following identities can be most easily used to verify steam table data for superheated steam ?

Thermodynamics for Chemical /
Which of the following identities can be most easily used to verify steam table data for superheated steam ?

A. (∂T/∂V)S = (∂p/∂S)V
B. (∂T/∂P)S = (∂V/∂S)P
C. (∂P/∂T)V = (∂S/∂V)T
D. (∂V/∂T)P = -(∂S/∂P)T

Which of the following identities can be most easily used to verify steam table data for superheated steam ? Read More »

Thermodynamics for Chemical