Q.1
14 Marks(a)
Define Thermodynamics, Thermodynamic system, and Thermodynamic Process.
(b)
State and explain phase rule for non-reacting system with examples.
(c)
Explain PVT behavior of pure substance with neat diagrams.
Gujarat Technological UniversitySummer 2026 examination
GTU 3130507 Chemical Engineering Thermodynamics I Summer 2026 Question Paper & PDF
B.E. · Chemical Engineering · Semester 3 · Subject code 3130507
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 2:30 PM – 5:00 PM
- Questions
- 5 with internal choice
No solutions on this paper yetNeed them for your exam? Ask once. Papers that students ask for are solved first, and we aim to add them within 24 hours.
Noted. This paper is in our queue now. Check back tomorrow.
We could not record that here. Email the paper name to hirenjsca@gmail.com and we will add it.
Q.2
14 Marks(a)
Differentiate between intensive and extensive properties with examples.
(b)
State various units of temperature and mention relations between them on various temperature scales.
(c)
Derive equation of constants of Vander Waal’s equation of state in terms of critical constants of a substance.
OR
(c)
Derive Virial equation of states starting from fundamentals. Explain Virial coefficients and their significance.
Q.3
14 Marks(a)
State various statements of second law of thermodynamics.
(b)
Explain Hess’s law of constant heat summation.
(c)
A steel casting [Cp = 0.5 kJ kg⁻¹ K-1] weighing 40 kg and at a temperature of 450°C is quenched in 150 kg of oil [Cp = 2.5 kJ kg⁻¹ K-1] at 25°C. If there are no heat losses, what is the change in entropy of
i)the casting
ii)the oil, and
iii)both considered together?
OR
(a)
Write a note on “Third law of thermodynamics”
(b)
Explain standard heat of formation and standard heat of reaction.
(c)
State and prove Carnot theorem for heat engines.
Q.4
14 Marks(a)
Explain sensible heat and latent heat.
(b)
Define heat capacity and explain its temperature dependency.
(c)
Derive Maxwell equations using fundamental property relations for a homogeneous fluid of constant composition.
OR
(a)
Explain temperature dependency of heat of reaction
(b)
Explain various thermodynamic diagrams in brief.
(c)
For the two-phase systems, Derive the Clausius / Clapeyron equation relating latent heat of vaporization directly to the vapor-pressure curve.
Q.5
14 Marks(a)
Define Mach number and explain its significance.
(b)
Explain flow of fluids through nozzles.
(c)
Explain COP of refrigeration and derive equation of COP for Carnot refrigeration cycle.
OR
(a)
Explain Throttling process in brief.
(b)
Write a note on ejectors.
(c)
Explain factors affecting the choice of refrigerant in detail.
More Chemical Engineering Thermodynamics I papers
Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.
Other Semester 3 subjects
BE Chemical
Preparing with friends?
Send this paper to your class group. Every question has its own link.
About this paper
Official Gujarat Technological University (GTU) examination paper for Chemical Engineering Thermodynamics I (Summer 2026, B.E. · Chemical Engineering, Sem 3). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.