Irreversibilty Causes MCQs : This section focuses on the "Irreversibilty Causes". These Multiple Choice Questions (MCQs) should be practiced to improve the Irreversibilty Causes skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
A heat transfer process approaches reversibility as the temperature difference between two bodies approaches
A. infinity
B. zero
C. -1
D. 1
Question 2
A process will be reversible if it has
A. no dissipative effects
B. dissipative effects
C. depends on the given conditions
D. none of the mentioned
Question 3
A reversible process coincides with a quasi-static process.
A. TRUE
B. FALSE
Question 4
A reversible process is performed in such a way that
A. at the conclusion of process, both system and surroundings can be restored to their initial states without producing any change
B. it should not leave any trace to show that the process had ever occurred
C. it is carried out infinitely slowly
D. all of the mentioned
Question 5
All actual heat transfer processes are
A. irreversible
B. take place through a finite temperature difference
C. both of the mentioned
D. none of the mentioned
Question 6
Free expansion is irreversible.
A. TRUE
B. FALSE
Question 7
Internal irreversibility is caused by
A. internal dissipative effects
B. friction, turbulence
C. electrical resistance, magnetic hysteresis
D. all of the mentioned
Question 8
Irreversibility can be distinguished in how many types?
A. 0
B. 1
C. 2
D. 3
Question 9
Irreversibility of a process may be due to
A. lack of equilibrium during the process
B. involvement of dissipative effects
C. both of the mentioned
D. none of the mentioned
Question 10
The continual motion of a movable device in the complete absence of friction is known as
A. PMM2
B. PMM3
C. PMM1
D. PMM0
Question 11
The external irreversibility occurs at the system boundary.
A. TRUE
B. FALSE
Question 12
The friction present in moving devices makes a process reversible.
A. TRUE
B. FALSE
Question 13
Which of the following can be a cause of irreversibility?
A. friction, viscosity
B. inelasticity
C. electrical resistance, magnetic hysteresis
D. all of the mentioned
Question 14
Which of the following is irreversible?
A. stirring work
B. friction work in moving devices
C. current flowing through a wire
D. all of the mentioned
Question 15
Which of the following is true?
A. mechanical irreversibility is due to finite pressure gradient
B. thermal irreversibility is due to finite temperature gradient
C. chemical irreversibility is due to finite concentration gradient
D. all of the mentioned