Gujarat Technological UniversitySummer 2026 examination

GTU BE03005011 Chemical Engineering Thermodynamics-1 Summer 2026 Question Paper & PDF

B.E. · Chemical Engineering · Semester 3 · Subject code BE03005011
Download official PDFView PDF here
Share with your class
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.

Q.1

14 Marks
(a)
3 marks
Distinguish between state function and path functions with examples. What would be the change in a state function in a cyclic process?
(b)
4 marks
Classify between closed system and open system. Say whether the following systems are closed or open:
aIndividual phases in a multiphase system
bA batch reactor
(c)
7 marks
Starting from fundamentals, Derive a mathematical expression of the first law of thermodynamics for a steady state flow process.

Q.2

14 Marks
(a)
3 marks
What is the principle of corresponding states?
(b)
4 marks
‘A reversible process is never attained in practice. It can only be approached.’ What are the factors that make this statement true?
(c)
7 marks

Heat is transferred to 10 kg of air which is initially at 100 kPa and 300 K until its temperature reaches 600 K. Determine the change in internal energy, the change in enthalpy, the heat supplied, and the work done in the following processes:

aConstant volume process
bConstant pressure process. Assume that air is an ideal gas for which the P-V-T relationship is PV = nRT, where n is the number of moles of the gas and R is the ideal gas constant. R = 8.314 kJ/kmol K. Take CPC_P = 29.099 kJ/kmol K, CVC_V = 20.785 kJ/kmol K and molecular weight of air = 29.
(c)
7 marks
How do you relate the van der Waals constants to the critical properties?

Q.3

14 Marks
(a)
3 marks
What does the term “acentric factor” refer to?
(b)
4 marks
Define: (a) The heat of reaction, (b) The standard heat of reaction, (c) The standard heat of formation, and (d) The standard heat of combustion.
(c)
7 marks
Calculate the standard heat of reaction of the methanol synthesis at 800 C.
CO(g)+2H2(g)→CH3OH(g)\text{CO(g)} + 2\text{H}_2\text{(g)} \rightarrow \text{CH}_3\text{OH(g)}
The standard heat of reaction at 25° C is -90135 J
Cp/R=A=BT+CT2+DT−2C_p/R = A = BT + CT^2 + DT^{-2} J and T is in K
componentAB∗103B*10^{3}C∗106C*10^{6}D∗10−5D*10^{-5}
CH3OH\text{CH}_3\text{OH}2.21112.216-3.4500.0000
CO3.3760.5570.0000-0.031
H2\text{H}_23.2490.4220.00000.083
(a)
3 marks
Give the Kelvin–Planck statement and the Clausius statement of the second law of thermo-dynamics.
(b)
4 marks
Give the mathematical definition of entropy and explain the terms involved
(c)
7 marks
State and prove the Clausius inequality.

Q.4

14 Marks
(a)
3 marks
Explain the Third Law of Thermodynamics in brief.
(b)
4 marks
Using Maxwell’s equation prove : dH = CpdT + V(1 – βT)dP , Where β = Volume expansivity
(c)
7 marks
Differentiate between reference properties, energy properties, and derived properties with proper example.
(a)
3 marks
Explain residual properties in thermodynamics with a brief note.
(b)
4 marks
Describe the different thermodynamic diagrams and their uses.
(c)
7 marks
By using Clausius- claperyon equation, calculate the vapour pressure of water at 363 K, if the vapour pressure at 373 K is 101.325 KJ/Kmol.K . The mean heat of Vaporization in this temperature range is 2275 KJ/Kg

Q.5

14 Marks
(a)
3 marks
Show that a 1-kW heat pump working between an indoor temperature of 300 K and an outside temperature of 290 K is equivalent to a 30-kW heater.
(b)
4 marks
Compare the Linde process with the Claude process for air liquefaction.
(c)
7 marks
Starting from total energy balance for a flow system and deduce the mechanical energy balance equation.
(a)
3 marks
On what principle does an absorption refrigeration system operate?
(b)
4 marks
What are the desirable properties of a refrigerant?
(c)
7 marks
With the help of a T-S diagram, deduce expressions for the COP of the vapour-compression cycles.

More Chemical Engineering Thermodynamics-1 papers

Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.

Winter 202570 marks · 5 questions

Other Semester 3 subjects

BE Chemical

3130502
Fluid Flow Operations
3130506
Applied Chemistry
3130507
Chemical Engineering Thermodynamics I
3130508
Material & Energy Balance Computation

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-1 (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.

Download official PDF All Chemical Engineering Thermodynamics-1 Papers (2) →Report a typo or correction
ViewDownload PDF