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Previous year question hub

Second Law of Thermodynamics - Engineering Sciences Previous Year Questions

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

19Papers
19Years
41Questions
1Topics

Second Law of 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 25 61%
Medium 16 39%

Question type distribution

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

MCQ 30 73.2%
Numerical Answer Type (NAT) 10 24.4%
Fill in the blanks 1 2.4%

Subject weightage

Top subjects by unique question coverage.

Engineering Sciences
41 Qs

Most asked topics

Top topics across the included previous year papers.

Second Law of Thermodynamics
41 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Heat Engines, Refrigerators and Carnot Principles
41 Qs

Paper coverage

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

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

Browse by subtopics

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

Heat Engines, Refrigerators and Carnot Principles

Explore previous-paper coverage, trends and focused practice for Heat Engines, Refrigerators and Carnot Principles.

41 questions19 papers19 years

Included previous year papers

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

Paper nameYearPDFAttempt
Engineering Sciences (XE) 20262026
1 questions in this view		2026
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20252025
3 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
1 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
1 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
Engineering Sciences (XE) 20222022
3 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
2 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
2 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 documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20182018
2 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
3 questions in this view		2016
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Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20142014
2 questions in this view		2014
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Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20132013
1 questions in this view		2013
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Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20122012
2 questions in this view		2012
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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
3 questions in this view		2009
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20082008
6 questions in this view		2008
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20072007
1 questions in this view		2007
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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 · Second Law of Thermodynamics · Heat Engines, Refrigerators and Carnot Principles
Engineering Sciences (XE) 2007
A reversible heat engine receives heat inputs of 300 kJ and 200 kJ from two thermal reservoirs at 1000 K and 800 K, respectively. The engine rejects heat Q to a reservoir at 300 K.
The value of Q is
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2
2008 · Engineering Sciences · Second Law of Thermodynamics · Heat Engines, Refrigerators and Carnot Principles
Engineering Sciences (XE) 2008
The COP of a Carnot heat pump operating between \( -3^\circ C \) and \( 27^\circ C \) is
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3
2009 · Engineering Sciences · Second Law of Thermodynamics · Heat Engines, Refrigerators and Carnot Principles
Engineering Sciences (XE) 2009
A Carnot refrigerator operating between -1 °C and 33 °C has a cooling capacity of 1.6 kW. The power consumed by the refrigerator is
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4
2010 · Engineering Sciences · Second Law of Thermodynamics · Heat Engines, Refrigerators and Carnot Principles
Engineering Sciences (XE) 2010

A heat pump, which operates in a cycle, extracts heat energy from the cold reservoir and supplies the same amount of energy to the hot reservoir. Which of the following statements holds for this process?

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5
2011 · Engineering Sciences · Second Law of Thermodynamics · Heat Engines, Refrigerators and Carnot Principles
Engineering Sciences (XE) 2011

A heat pump extracts heat at the rate of 100 kW from a low temperature reservoir and delivers heat at the rate of 160 kW to a high temperature reservoir. The COP of the heat pump is

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6
2012 · Engineering Sciences · Second Law of Thermodynamics · Heat Engines, Refrigerators and Carnot Principles
Engineering Sciences (XE) 2012
If \( Q_L \) represents the magnitude of heat transfer from a low temperature reservoir to a cyclic device and \( Q_H \) represents the magnitude of heat transfer from a cyclic device to a high temperature reservoir, then for the same \( Q_L \) and \( Q_H \), the coefficient performance of a refrigerator ( \( COP_R \) ) and the coefficient performance of a heat pump ( \( COP_{HP} \) ) can be related as
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