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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.

16Papers
16Years
78Questions
1Topics

First Law of Thermodynamics question pattern

Every graph below is calculated only from this selection.

Questions by year

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

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 43 55.1%
Easy 31 39.7%
Hard 4 5.1%

Question type distribution

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

Numerical Answer Type (NAT) 40 51.3%
MCQ 33 42.3%
Fill in the blanks 3 3.8%
MSQ 2 2.6%

Subject weightage

Top subjects by unique question coverage.

Engineering Sciences
78 Qs

Most asked topics

Top topics across the included previous year papers.

First Law of Thermodynamics
78 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Energy Balances for Closed Systems and Control Volumes
78 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) 2010
1 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.

78 questions16 papers16 years

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
Engineering Sciences (XE) 202620264View paper
Engineering Sciences (XE) 202520257View paper
Engineering Sciences (XE) 202420246View paper
Engineering Sciences (XE) 202320236View paper
Engineering Sciences (XE) 202220224View paper
Engineering Sciences (XE) 202120216View paper
Engineering Sciences (XE) 202020204View paper
Engineering Sciences (XE) 201920192View paper
Engineering Sciences (XE) 201820187View paper
Engineering Sciences (XE) 201720174View paper
Engineering Sciences (XE) 201620166View paper
Engineering Sciences (XE) 201520156View paper
Engineering Sciences (XE) 201420145View paper
Engineering Sciences (XE) 201320135View paper
Engineering Sciences (XE) 201220125View paper
Engineering Sciences (XE) 201020101View paper

Sample previous year questions

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

1
2010 · Engineering Sciences · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2010
Water at 20°C is pumped from a base tank to an elevated tank, 15 m above the base tank. Water flows at a rate of 5.0 × 10-3 m3 s-1 through a pipe having internal diameter of 0.1023 m. Frictional energy loss in the pipe is 6.837 J kg-1. The pump has an efficiency of 63%. Density and viscosity of water are 998.2 kg m-3 and 1.005 × 10-3 Pa s, respectively.
Power needed for pumping water in kW is
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2
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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3
2013 · Engineering Sciences · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2013

For an ideal gas as a working fluid for a given heat input Q, the process that gives the maximum work among the following four processes is

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4
2014 · Engineering Sciences · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2014
A gas in a closed system is compressed reversibly from an initial volume of 0.2 m³ to 0.1 m³ at a constant pressure of 3 bar. During this process, there was a heat transfer of 50 kJ from the gas. The change in internal energy of the gas during this process in kJ is
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5
2015 · Engineering Sciences · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2015
A lead bullet at 100°C traveling at 500 m/s, strikes a target and adiabatically comes to rest. If the specific heat of lead is 92 J/kg °C, melting temperature is 327.5 °C and heat of fusion is 108 kJ/kg, the percentage mass of lead in the bullet that is melted by collision is ______.
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6
2016 · Engineering Sciences · First Law of Thermodynamics · Energy Balances for Closed Systems and Control Volumes
Engineering Sciences (XE) 2016
A pump is used to deliver water to an overhead tank at a flow rate of $Q = 4 \times 10^{-3} \, \mathrm{m^3/s}$. The pump adds 1.6 kW to water. If the density of water is 1000 kg/m³ and acceleration due to gravity is 10 m/s², the pump head added to the flow is _____________ m.
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