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Previous year question hub

Thermodynamics - Life Sciences Previous Year Questions

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

19Papers
19Years
34Questions
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 19 55.9%
Medium 15 44.1%

Question type distribution

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

MCQ 19 55.9%
Numerical Answer Type (NAT) 13 38.2%
MSQ 2 5.9%

Subject weightage

Top subjects by unique question coverage.

Life Sciences
34 Qs

Most asked topics

Top topics across the included previous year papers.

Thermodynamics
34 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Thermodynamic Laws and Thermochemistry
19 Qs
Entropy, Free Energy and Spontaneity
15 Qs

Paper coverage

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

Life Sciences (XL) 2026
2 Qs
Life Sciences (XL) 2025
2 Qs
Life Sciences (XL) 2024
3 Qs
Life Sciences (XL) 2023
2 Qs
Life Sciences (XL) 2022
2 Qs
Life Sciences (XL) 2021
1 Qs
Life Sciences (XL) 2020
2 Qs
Life Sciences (XL) 2018
2 Qs
Life Sciences (XL) 2017
1 Qs
Life Sciences (XL) 2016
2 Qs
Life Sciences (XL) 2015
1 Qs
Life Sciences (XL) 2014
4 Qs
Life Sciences (XL) 2013
1 Qs
Life Sciences (XL) 2012
1 Qs
Life Sciences (XL) 2011
1 Qs
Life Sciences (XL) 2010
1 Qs
Life Sciences (XL) 2009
1 Qs
Life Sciences (XL) 2008
1 Qs
Life Sciences (XL) 2007
4 Qs

Browse by subtopics

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

Thermodynamic Laws and Thermochemistry

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

19 questions14 papers14 years

Entropy, Free Energy and Spontaneity

Explore previous-paper coverage, trends and focused practice for Entropy, Free Energy and Spontaneity.

15 questions11 papers11 years

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
Life Sciences (XL) 202620262View paper
Life Sciences (XL) 202520252View paper
Life Sciences (XL) 202420243View paper
Life Sciences (XL) 202320232View paper
Life Sciences (XL) 202220222View paper
Life Sciences (XL) 202120211View paper
Life Sciences (XL) 202020202View paper
Life Sciences (XL) 201820182View paper
Life Sciences (XL) 201720171View paper
Life Sciences (XL) 201620162View paper
Life Sciences (XL) 201520151View paper
Life Sciences (XL) 201420144View paper
Life Sciences (XL) 201320131View paper
Life Sciences (XL) 201220121View paper
Life Sciences (XL) 201120111View paper
Life Sciences (XL) 201020101View paper
Life Sciences (XL) 200920091View paper
Life Sciences (XL) 200820081View paper
Life Sciences (XL) 200720074View paper

Sample previous year questions

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

1
2007 · Life Sciences · Thermodynamics · Thermodynamic Laws and Thermochemistry
Life Sciences (XL) 2007
For the reaction A ⇌ B, the activation energy for the forward reaction is 123 kJ/mol. The activation energy for the reverse reaction is 140 kJ/mol. The enthalpy change for the forward reaction is
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2
2008 · Life Sciences · Thermodynamics · Thermodynamic Laws and Thermochemistry
Life Sciences (XL) 2008

Liquid bromine boils at 59 °C. Assuming it to be a normal liquid, which of the following gives its standard molar enthalpy of vaporization?

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3
2009 · Life Sciences · Thermodynamics · Entropy, Free Energy and Spontaneity
Life Sciences (XL) 2009
The reversible and irreversible entropy changes of a system on going from state '1' to state '2' are \( \Delta S_{12}^{rev} \) and \( \Delta S_{12}^{irrev} \) respectively. The correct relationship between the two entropy changes is
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4
2010 · Life Sciences · Thermodynamics · Entropy, Free Energy and Spontaneity
Life Sciences (XL) 2010
For a spontaneous process, the total entropy change (ΔSsystem + ΔSsurroundings) is

Question diagram

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5
2011 · Life Sciences · Thermodynamics · Thermodynamic Laws and Thermochemistry
Life Sciences (XL) 2011
Trouton’s rule is obeyed by
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6
2012 · Life Sciences · Thermodynamics · Entropy, Free Energy and Spontaneity
Life Sciences (XL) 2012
The actual free energy change of a given biochemical reaction carried out under standard conditions with 1 M initial concentration of each of the reactants and products will be
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