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Previous year question hub

First Law of Thermodynamics - Engineering Sciences Previous Year Questions

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

20Papers
20Years
110Questions
1Topics

First 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.

Medium 61 55.5%
Easy 43 39.1%
Hard 6 5.5%

Question type distribution

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

MCQ 65 59.1%
Numerical Answer Type (NAT) 40 36.4%
Fill in the blanks 3 2.7%
MSQ 2 1.8%

Subject weightage

Top subjects by unique question coverage.

Engineering Sciences
110 Qs

Most asked topics

Top topics across the included previous year papers.

First Law of Thermodynamics
110 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Energy Balances for Closed Systems and Control Volumes
110 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
7 Qs
Engineering Sciences (XE) 2024
6 Qs
Engineering Sciences (XE) 2023
6 Qs
Engineering Sciences (XE) 2022
4 Qs
Engineering Sciences (XE) 2021
6 Qs
Engineering Sciences (XE) 2020
4 Qs
Engineering Sciences (XE) 2019
2 Qs
Engineering Sciences (XE) 2018
7 Qs
Engineering Sciences (XE) 2017
4 Qs
Engineering Sciences (XE) 2016
6 Qs
Engineering Sciences (XE) 2015
6 Qs
Engineering Sciences (XE) 2014
5 Qs
Engineering Sciences (XE) 2013
5 Qs
Engineering Sciences (XE) 2012
5 Qs
Engineering Sciences (XE) 2011
6 Qs
Engineering Sciences (XE) 2010
6 Qs
Engineering Sciences (XE) 2009
5 Qs
Engineering Sciences (XE) 2008
10 Qs
Engineering Sciences (XE) 2007
6 Qs

Browse by subtopics

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

Energy Balances for Closed Systems and Control Volumes

Explore previous-paper coverage, trends and focused practice for Energy Balances for Closed Systems and Control Volumes.

110 questions20 papers20 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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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20252025
7 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
6 questions in this view		2024
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Official documents
Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20232023
6 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
4 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
6 questions in this view		2021
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Official documents
Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20202020
4 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
7 questions in this view		2018
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20172017
4 questions in this view		2017
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20162016
6 questions in this view		2016
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20152015
6 questions in this view		2015
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Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20142014
5 questions in this view		2014
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20132013
5 questions in this view		2013
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20122012
5 questions in this view		2012
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20112011
6 questions in this view		2011
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20102010
6 questions in this view		2010
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20092009
5 questions in this view		2009
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20082008
10 questions in this view		2008
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20072007
6 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 · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2007
A rigid tank is connected through a valve to steam mains supplying steam at 1 MPa, 400°C. Heat is transferred from the tank to the surroundings, and the valve is closed when the total amount of cooling is 2000 kJ. The energy contained in the tank is the same before and after the process. Neglecting potential and kinetic energy changes, the mass of the steam that enters the tank is
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2
2008 · Engineering Sciences · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2008

The work done in an isentropic process involving ideal gas is equal to

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3
2009 · Engineering Sciences · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2009
For an ideal gas undergoing a throttling process 1-2, which of the following relationships holds ?
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4
2010 · Engineering Sciences · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2010
An ideal gas is known to obey following relationships: u = 200 + 0.718 T and Pv = 0.287(T + 273), where u is specific internal energy (kJ/kg), T is temperature (°C), P is pressure (kPa) and v is specific volume (m³/kg). Specific heat (in kJ/kg-K) at constant pressure is
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5
2011 · Engineering Sciences · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2011
The condition of steam at inlet and exit of a perfectly insulated steam turbine running under steady-state conditions is as follows:
At inlet: specific enthalpy = 3230 kJ/kg; velocity = 160 m/s
At exit: specific enthalpy = 2660 kJ/kg; velocity = 100 m/s
Neglecting changes in potential energy, the work done by the steam turbine is approximately
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6
2012 · Engineering Sciences · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2012
A certain mass of gas at 0°C is expanded to 81 times its original volume under adiabatic conditions. If ratio of specific heats of the gas, \( \gamma = 1.25 \), the final temperature of the gas is
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