Explore topic-wise MCQs in Thermodynamics.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

Isothermal compression requires minimum work.

A. true
B. false
Answer» B. false
Discussion
2.

The slope of an isentrope is ____ the slope of an isotherm on p-v diagram.

A. less than
B. greater than
C. equal to
D. less than or equal to
Answer» C. equal to
Discussion
3.

At constant entropy, the two TdS equations give us the relation

A. Cp+Cv = 0
B. Cp=Cv
C. Cp-Cv = mR
D. Cp/Cv =
Answer» E.
Discussion
4.

The equation Cp-Cv = -T*( p/ V)( V/ T)2 can also be expressed as

A. Cp-Cv = T*V*(isothermal compressibility)<sup>2</sup> / (volume expansivity)
B. Cp-Cv = T*V*(isothermal compressibility) / (volume expansivity)
C. Cp-Cv = T*V*(volume expansivity)<sup>2</sup> / (isothermal compressibility)
D. Cp-Cv = T*V*(volume expansivity) / (isothermal compressibility)
Answer» D. Cp-Cv = T*V*(volume expansivity) / (isothermal compressibility)
Discussion
5.

The volume expansivity and isothermal compressibility is defined as

A. volume expansivity = (1/V)*( V/ T) at p and isothermal compressibility = (-1/V)*( V/ T) at T
B. volume expansivity = (1/V)*( V/ T) at p and isothermal compressibility = (-1/V)*( V/ T) at T
C. volume expansivity = (1/V)*( V/ T) at p and isothermal compressibility = (-1/V)*( V/ T) at T
D. none of the mentioned
Answer» B. volume expansivity = (1/V)*( V/ T) at p and isothermal compressibility = (-1/V)*( V/ T) at T
Discussion
6.

For an ideal gas,

A. Cp-Cv = R
B. Cp-Cv = mR
C. Cp=Cv
D. all of the mentioned
Answer» C. Cp=Cv
Discussion
7.

When do we have the condition Cp=Cv?

A. as T approaches 0K, Cp tends to approach Cv
B. when ( V/ T)=0, Cp=Cv
C. both of the mentioned are correct
D. none of the mentioned are correct
Answer» D. none of the mentioned are correct
Discussion
8.

Consider the equation Cp-Cv = -T*( p/ V)( V/ T)2 , which of the following is correct?

A. ( V/ T)<sup>2</sup> is always positive
B. ( p/ V) for any substance is negative
C. (Cp-Cv) is always positive
D. all of the mentioned
Answer» E.
Discussion
9.

What do we get on equating the first and second TdS equations?

A. Cp-Cv = T*( T/ p)*( V/ T)
B. Cp-Cv = T*( p/ T)*( V/ T)
C. Cp+Cv = T*( p/ T)*( V/ T)
D. none of the mentioned
Answer» C. Cp+Cv = T*( p/ T)*( V/ T)
Discussion