Explore topic-wise MCQs in Thermodynamics.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

Ice (solid water) at 3 C and 100 kPa, is compressed isothermally until it becomes liquid. Find the required pressure.

A. 20461 kPa
B. 30461 kPa
C. 40461 kPa
D. 50461 kPa
Answer» D. 50461 kPa
Discussion
2.

An application requires R-12 at 140 C. The triple-point temperature is 157 C. Find the pressure of the saturated vapour at the required condition.

A. 0.0058 kPa
B. 0.0098 kPa
C. 0.0068 kPa
D. 0.0088 kPa
Answer» C. 0.0068 kPa
Discussion
3.

Latent heat of sublimation is given by

A. l(sublimation) = -2.303*(R)*(d(1/T)/d(log p ))
B. l(sublimation) = +2.303*(R)*(d(log p )/d(1/T))
C. l(sublimation) = +2.303*(R)*(d(1/T)/d(log p ))
D. l(sublimation) = -2.303*(R)*(d(log p )/d(1/T))
Answer» E.
Discussion
4.

The slope of sublimation curve is ____ the slope of the vaporization curve at triple point.

A. equal to
B. less than
C. greater than
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
5.

At the triple point, l(sublimation) = l(vaporization) l(fusion).

A. true
B. false
Answer» C.
Discussion
6.

According to Trouton s rule, the ratio of latent heat of vaporization to the boiling point at 1.013 bar is

A. 77 kJ/kgmol K
B. 88 kJ/kgmol K
C. 99 kJ/kgmol K
D. 100 kJ/kgmol K
Answer» C. 99 kJ/kgmol K
Discussion