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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.

18Papers
18Years
89Questions
1Topics

Thermodynamics question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Thermodynamics. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 48 53.9%
Medium 41 46.1%

Question type distribution

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

MCQ 58 65.2%
Numerical Answer Type (NAT) 28 31.5%
Fill in the blanks 2 2.2%
MSQ 1 1.1%

Subject weightage

Top subjects by unique question coverage.

Chemical Engineering
89 Qs

Most asked topics

Top topics across the included previous year papers.

Thermodynamics
89 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Thermodynamic Laws and Properties
53 Qs
Mixture Properties and Phase Equilibria
30 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) 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
4 Qs
Chemical Engineering (CH) 2007
8 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.

53 questions18 papers18 years

Mixture Properties and Phase Equilibria

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

30 questions18 papers18 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. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
Chemical Engineering (CH) 202620264View paper
Chemical Engineering (CH) 202520256View paper
Chemical Engineering (CH) 202420243View paper
Chemical Engineering (CH) 202320235View paper
Chemical Engineering (CH) 202220226View paper
Chemical Engineering (CH) 202120216View paper
Chemical Engineering (CH) 202020204View paper
Chemical Engineering (CH) 201920197View paper
Chemical Engineering (CH) 201820183View paper
Chemical Engineering (CH) 201720175View paper
Chemical Engineering (CH) 201420144View paper
Chemical Engineering (CH) 201320137View paper
Chemical Engineering (CH) 201220125View paper
Chemical Engineering (CH) 201120114View paper
Chemical Engineering (CH) 201020104View paper
Chemical Engineering (CH) 200920094View paper
Chemical Engineering (CH) 200820084View paper
Chemical Engineering (CH) 200720078View paper

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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