Q.1
14 Marks(a)
List different equations of state used for real gases.
(b)
Differentiate between work and heat.
(c)
Describe the concepts of thermodynamic equilibrium and phase rule, and illustrate them with suitable examples.
Gujarat Technological UniversityWinter 2025 examination
GTU BE03005011 Chemical Engineering Thermodynamics-1 Winter 2025 Question Paper & PDF
B.E. · Chemical Engineering · Semester 3 · Subject code BE03005011
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 10:30 AM – 1:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
Define internal energy and enthalpy.
(b)
Differentiate between ideal and non-ideal gases.
(c)
Determine the molar volume of n-butane at 510 K and 25 bar by each of the following:
i)The ideal-gas equation.
ii)The generalized virial-coefficient correlation
Data given: TC = 425.1 K, PC = 37.96 bar, and ω = 0.2
OR
(c)
Explain the use of generalized correlations for estimating gas properties.
Q.3
14 Marks(a)
Define sensible and latent heat.
(b)
Explain the working principle of a nozzle.
(c)
From a reservoir at 600 K, 1000 J of heat is transferred to an engine that operates on the Carnot cycle. The engine rejects heat to a reservoir at 300 K. Determine the thermal efficiency of the cycle and the work done by the engine.
OR
(a)
State Kelvin–Planck and Clausius statements of the second law of thermodynamics.
(b)
Analyze how the temperature dependence of heat capacity (Cp) affects the enthalpy change (ΔH) of a chemical reaction over a wide temperature range.
(c)
Describe the application of the second law of thermodynamics in power generation systems.
Q.4
14 Marks(a)
State the working principle of Carnot refrigerator.
(b)
Discuss the concept of residual properties and their importance.
(c)
Demonstrate how the Clapeyron equation is obtained from the equality of Gibbs energies of two coexisting phases.
OR
(a)
State fundamental property relations for homogeneous fluid of constant composition.
(b)
Explain vapor compression refrigeration cycle.
(c)
Describe methods for estimation of latent heat for pure substances.
Q.5
14 Marks(a)
A central power plant, rated at 800000 kW, generates steam at 585 K and discards heat to a river at 295 K. Calculate the actual thermal efficiency of the plant, which is 70% of the maximum possible value.
(b)
Explain the selection criteria for refrigerants.
(c)
Explain the role of thermodynamic diagrams in estimating thermodynamic properties.
OR
(a)
An automobile having a mass of 1250 kg is traveling at 40 m s⁻¹. Calculate the kinetic energy in kJ?
(b)
Explain the applications of refrigeration in chemical engineering.
(c)
Define ejector and its working principle. Discuss its role in process industries.
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About this paper
Official Gujarat Technological University (GTU) examination paper for Chemical Engineering Thermodynamics-1 (Winter 2025, 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.