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Previous year question hub

Thermodynamics, Kinetics and Phase Transformations - Engineering Sciences Previous Year Questions

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

20Papers
20Years
65Questions
1Topics

Thermodynamics, Kinetics and Phase Transformations 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.

Medium 37 56.9%
Easy 28 43.1%

Question type distribution

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

MCQ 37 56.9%
Numerical Answer Type (NAT) 22 33.8%
MSQ 4 6.2%
Fill in the blanks 2 3.1%

Subject weightage

Top subjects by unique question coverage.

Engineering Sciences
65 Qs

Most asked topics

Top topics across the included previous year papers.

Thermodynamics, Kinetics and Phase Transformations
65 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Thermodynamic Equilibria and Phase Diagrams
35 Qs
Reaction Kinetics and Diffusion
18 Qs
Nucleation, Solidification and Phase Transformations
12 Qs

Paper coverage

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

Engineering Sciences (XE) 2026
4 Qs
Engineering Sciences (XE) 2025
2 Qs
Engineering Sciences (XE) 2024
4 Qs
Engineering Sciences (XE) 2023
5 Qs
Engineering Sciences (XE) 2022
7 Qs
Engineering Sciences (XE) 2021
5 Qs
Engineering Sciences (XE) 2020
3 Qs
Engineering Sciences (XE) 2019
2 Qs
Engineering Sciences (XE) 2018
1 Qs
Engineering Sciences (XE) 2017
2 Qs
Engineering Sciences (XE) 2016
5 Qs
Engineering Sciences (XE) 2015
2 Qs
Engineering Sciences (XE) 2014
4 Qs
Engineering Sciences (XE) 2013
4 Qs
Engineering Sciences (XE) 2012
2 Qs
Engineering Sciences (XE) 2011
2 Qs
Engineering Sciences (XE) 2010
2 Qs
Engineering Sciences (XE) 2009
1 Qs
Engineering Sciences (XE) 2008
5 Qs
Engineering Sciences (XE) 2007
3 Qs

Browse by subtopics

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

Thermodynamic Equilibria and Phase Diagrams

Explore previous-paper coverage, trends and focused practice for Thermodynamic Equilibria and Phase Diagrams.

35 questions18 papers18 years

Reaction Kinetics and Diffusion

Explore previous-paper coverage, trends and focused practice for Reaction Kinetics and Diffusion.

18 questions15 papers15 years

Nucleation, Solidification and Phase Transformations

Explore previous-paper coverage, trends and focused practice for Nucleation, Solidification and Phase Transformations.

12 questions9 papers9 years

Included previous year papers

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

Paper nameYearPDFAttempt
Engineering Sciences (XE) 20262026
4 questions in this view		2026
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Engineering Sciences (XE) 20252025
2 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
Engineering Sciences (XE) 20242024
4 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
Engineering Sciences (XE) 20232023
5 questions in this view		2023
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Engineering Sciences (XE) 20222022
7 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
Engineering Sciences (XE) 20212021
5 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
Engineering Sciences (XE) 20202020
3 questions in this view		2020
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Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20192019
2 questions in this view		2019
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Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20182018
1 questions in this view		2018
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20172017
2 questions in this view		2017
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20162016
5 questions in this view		2016
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20152015
2 questions in this view		2015
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20142014
4 questions in this view		2014
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20132013
4 questions in this view		2013
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20122012
2 questions in this view		2012
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20112011
2 questions in this view		2011
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20102010
2 questions in this view		2010
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20092009
1 questions in this view		2009
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20082008
5 questions in this view		2008
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20072007
3 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 · Engineering Sciences · Thermodynamics, Kinetics and Phase Transformations · Reaction Kinetics and Diffusion
Engineering Sciences (XE) 2007
In a material, which of the following diffusion mechanisms would have lowest activation energy ?
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2
2008 · Engineering Sciences · Thermodynamics, Kinetics and Phase Transformations · Reaction Kinetics and Diffusion
Engineering Sciences (XE) 2008

The characteristic diffusion distance in a material with diffusivity “D” in time “t” is proportional to

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3
2009 · Engineering Sciences · Thermodynamics, Kinetics and Phase Transformations · Thermodynamic Equilibria and Phase Diagrams
Engineering Sciences (XE) 2009
Steel containing 0.8 % carbon cooled under equilibrium conditions from molten state to room temperature is soft, because it consists of lamellae of
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4
2010 · Engineering Sciences · Thermodynamics, Kinetics and Phase Transformations · Nucleation, Solidification and Phase Transformations
Engineering Sciences (XE) 2010
A plain carbon steel sample is water- quenched from 900°C to room temperature. Its microstructure will consist of
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5
2011 · Engineering Sciences · Thermodynamics, Kinetics and Phase Transformations · Thermodynamic Equilibria and Phase Diagrams
Engineering Sciences (XE) 2011
A plain carbon steel was annealed just above the eutectoid temperature. Microstructural analysis revealed that the proeutectoid ferrite content was 30 wt%. The eutectoid reaction in the iron-iron carbide phase diagram is given below: \[ \gamma \, (0.76 \text{ wt\% C}) \xrightarrow[\text{heating}]{\text{cooling}} \alpha \, (0.022 \text{ wt\% C}) + \text{Fe}_3\text{C} \, (6.7 \text{ wt\% C}) \] The carbon content of the steel (in wt%) is

Question diagram

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6
2012 · Engineering Sciences · Thermodynamics, Kinetics and Phase Transformations · Thermodynamic Equilibria and Phase Diagrams
Engineering Sciences (XE) 2012
During cooling from 900°C to 723°C, the proeutectoid α forms from γ. Find the volume % of proeutectoid α just below 723°C for the steel.
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