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Previous year question hub

Thermodynamics - Chemical Engineering Previous Year Questions

Practice Thermodynamics - Chemical Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

19Papers
19Years
98Questions
1Topics

Thermodynamics question pattern

Every graph below is calculated only from this selection.

Questions by year

Compare question counts across years.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 50 51%
Medium 48 49%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 63 64.3%
Numerical Answer Type (NAT) 32 32.7%
Fill in the blanks 2 2%
MSQ 1 1%

Subject weightage

Top subjects by unique question coverage.

Chemical Engineering
98 Qs

Most asked topics

Top topics across the included previous year papers.

Thermodynamics
98 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Thermodynamic Laws and Properties
57 Qs
Mixture Properties and Phase Equilibria
35 Qs
Chemical Reaction Equilibrium
6 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

Chemical Engineering (CH) 2026
4 Qs
Chemical Engineering (CH) 2025
6 Qs
Chemical Engineering (CH) 2024
3 Qs
Chemical Engineering (CH) 2023
5 Qs
Chemical Engineering (CH) 2022
6 Qs
Chemical Engineering (CH) 2021
6 Qs
Chemical Engineering (CH) 2020
4 Qs
Chemical Engineering (CH) 2019
7 Qs
Chemical Engineering (CH) 2018
3 Qs
Chemical Engineering (CH) 2017
5 Qs
Chemical Engineering (CH) 2016
4 Qs
Chemical Engineering (CH) 2014
4 Qs
Chemical Engineering (CH) 2013
7 Qs
Chemical Engineering (CH) 2012
5 Qs
Chemical Engineering (CH) 2011
4 Qs
Chemical Engineering (CH) 2010
4 Qs
Chemical Engineering (CH) 2009
4 Qs
Chemical Engineering (CH) 2008
5 Qs
Chemical Engineering (CH) 2007
12 Qs

Browse by subtopics

Open a focused page built from the same verified paper data.

Thermodynamic Laws and Properties

Explore previous-paper coverage, trends and focused practice for Thermodynamic Laws and Properties.

57 questions19 papers19 years

Mixture Properties and Phase Equilibria

Explore previous-paper coverage, trends and focused practice for Mixture Properties and Phase Equilibria.

35 questions19 papers19 years

Chemical Reaction Equilibrium

Explore previous-paper coverage, trends and focused practice for Chemical Reaction Equilibrium.

6 questions6 papers6 years

Included previous year papers

Newest papers appear first. Search these papers or sort by year and name.

Paper nameYearPDFAttempt
Chemical Engineering (CH) 20262026
4 questions in this view		2026
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Chemical Engineering (CH) 20252025
6 questions in this view		2025
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20242024
3 questions in this view		2024
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20232023
5 questions in this view		2023
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20222022
6 questions in this view		2022
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20212021
6 questions in this view		2021
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20202020
4 questions in this view		2020
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Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20192019
7 questions in this view		2019
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Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20182018
3 questions in this view		2018
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20172017
5 questions in this view		2017
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Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20162016
4 questions in this view		2016
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Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20142014
4 questions in this view		2014
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Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20132013
7 questions in this view		2013
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Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20122012
5 questions in this view		2012
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20112011
4 questions in this view		2011
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20102010
4 questions in this view		2010
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20092009
4 questions in this view		2009
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ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20082008
5 questions in this view		2008
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ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20072007
12 questions in this view		2007
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Official documents
Official question paperOriginal authority-issued PDF Official Download

Sample previous year questions

A varied preview from the papers represented in this selection, with every available option.

1
2007 · Chemical Engineering · Thermodynamics · Thermodynamic Laws and Properties
Chemical Engineering (CH) 2007
The state of an ideal gas is changed from \((T_1, P_1)\) to \((T_2, P_2)\) in a constant volume process. To calculate the change in enthalpy, \(\Delta h\), ALL of the following properties/variables are required.
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2
2008 · Chemical Engineering · Thermodynamics · Thermodynamic Laws and Properties
Chemical Engineering (CH) 2008
Q.6 For a Carnot refrigerator operating between 40°C and 25°C, the coefficient of performance is
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3
2009 · Chemical Engineering · Thermodynamics · Thermodynamic Laws and Properties
Chemical Engineering (CH) 2009
An ideal gas at temperature \( T_1 \) and pressure \( P_1 \) is compressed isothermally to pressure \( P_2 (> P_1) \) in a closed system. Which ONE of the following is TRUE for internal energy (U) and Gibbs free energy (G) of the gas at the two states ?
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4
2010 · Chemical Engineering · Thermodynamics · Thermodynamic Laws and Properties
Chemical Engineering (CH) 2010
The Maxwell-Boltzmann velocity distribution for the x-component of the velocity, at temperature T, is \( f(v_x) = \sqrt{\frac{m}{2\pi kT}} \exp \left( -\frac{m v_x^2}{2kT} \right) \). The standard deviation of the distribution is
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5
2011 · Chemical Engineering · Thermodynamics · Mixture Properties and Phase Equilibria
Chemical Engineering (CH) 2011
Minimum work (\(W\)) required to separate a binary gas mixture at a temperature \(T_0\) and pressure \(P_0\) is
\[W = -RT_0 \left[ y_1 \ln \left( \frac{\hat{f}_1}{f_{pure,1}} \right) + y_2 \ln \left( \frac{\hat{f}_2}{f_{pure,2}} \right) \right]\]
where \(y_1\) and \(y_2\) are mole fractions, \(f_{pure,1}\) and \(f_{pure,2}\) are fugacities of pure species at \(T_0\) and \(P_0\), and \(\hat{f}_1\) and \(\hat{f}_2\) are fugacities of species in the mixture at \(T_0\), \(P_0\) and \(y_1\). If the mixture is ideal then \(W\) is
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6
2012 · Chemical Engineering · Thermodynamics · Thermodynamic Laws and Properties
Chemical Engineering (CH) 2012
In a throttling process, the pressure of an ideal gas reduces by 50 %. If \( C_p \) and \( C_v \) are the heat capacities at constant pressure and constant volume, respectively (\( \gamma = C_p/C_v \)), the specific volume will change by a factor of
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