My Cart
Your Cart 0

    Your cart is empty.

  • Total (Amount) ₹0.00
Previous year question hub

Gas-mixture Properties and Psychrometrics - Mixtures of Ideal Gases - Engineering Sciences Previous Year Questions

Practice Gas-mixture Properties and Psychrometrics - Mixtures of Ideal Gases - Engineering Sciences previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

20Papers
20Years
57Questions
1Topics

Gas-mixture Properties and Psychrometrics 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 29 50.9%
Easy 26 45.6%
Hard 2 3.5%

Question type distribution

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

MCQ 26 45.6%
Numerical Answer Type (NAT) 25 43.9%
Fill in the blanks 3 5.3%
MSQ 3 5.3%

Subject weightage

Top subjects by unique question coverage.

Engineering Sciences
57 Qs

Most asked topics

Top topics across the included previous year papers.

Mixtures of Ideal Gases
57 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Gas-mixture Properties and Psychrometrics
57 Qs

Paper coverage

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

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

Included previous year papers

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

Paper nameYearPDFAttempt
Engineering Sciences (XE) 20262026
5 questions in this view		2026
ExamElite PDFs
ExamElite solutions
Official documents
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
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20242024
3 questions in this view		2024
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20232023
2 questions in this view		2023
ExamElite PDFs
ExamElite solutions
Official documents
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
ExamElite PDFs
ExamElite solutions
Official documents
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
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20202020
1 questions in this view		2020
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20192019
3 questions in this view		2019
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20182018
3 questions in this view		2018
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20172017
3 questions in this view		2017
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20162016
4 questions in this view		2016
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20152015
2 questions in this view		2015
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20142014
3 questions in this view		2014
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20132013
3 questions in this view		2013
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20122012
2 questions in this view		2012
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20112011
1 questions in this view		2011
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20102010
2 questions in this view		2010
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20092009
3 questions in this view		2009
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20082008
3 questions in this view		2008
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Engineering Sciences (XE) 20072007
2 questions in this view		2007
ExamElite PDFs
ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download

All Gas-mixture Properties and Psychrometrics previous year questions

Practice every matching question in batches of 20, with every available option.

1
2007 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2007
A piston-cylinder arrangement contains an ideal gas mixture of 1 kg Nitrogen (M = 28 kg/kmol, γ = 1.4) and 2 kg of Argon (M = 40 kg/kmol, γ = 1.667), at 100 kPa, 300 K. The gas expands at constant pressure until the volume increases by 1 m³.
The initial volume of the gas mixture is approximately
Open complete paper
2
2007 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2007
A rigid tank contains a mixture of 0.2 kg of saturated water vapour and 2 kg of air (M = 29 kg/kmol) at a temperature of 50°C.
The volume of the mixture is approximately
Open complete paper
3
2008 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2008
If the moist air is heated at a constant pressure
Open complete paper
4
2008 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2008
Partial pressure of water vapor inside the compressor is
Open complete paper
5
2008 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2008
Relative humidity of air inside the compressor is
Open complete paper
6
2009 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2009
During the adiabatic saturation process
Open complete paper
7
2009 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2009
The partial pressure and vapour pressure of water vapour in air at 27 °C and 1 atm. are 0.028 and 0.035 atm. respectively. (Molecular weight of air is 29)
The humidity of air (kg water /kg air) is
Open complete paper
8
2009 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2009
The percentage relative humidity of air is
Open complete paper
9
2010 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2010
A mixture of Freon and air is supplied for cleaning a chamber. The mixture contains 70% by volume of air and 30% by volume of Freon. Specific heat ratios for Freon and air are 1.1 and 1.4 respectively. Molecular mass of Freon is 200 g/mole and that of air is 30 g/mole. Temperature of gas is 300 K. If, universal gas constant is 8.314 J/mole·K, specific heat ratio of the mixture is
Open complete paper
10
2010 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2010

Air-water vapour mixture having 100% relative humidity at 50°C is heated isobarically to 100°C in a closed system. If saturation pressure at 50°C is 12.352 kPa and at 100°C is 101.42 kPa, final relative humidity is

Question diagram

Open complete paper
11
2011 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2011

One kilomole of hydrogen (M = 2 kg/kmol) is mixed with certain number of kilomoles of argon (M = 40 kg/kmol) such that the mass fraction of argon in the resultant mixture is 0.8. The number of kilomoles of argon in the mixture is

Open complete paper
12
2012 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2012
The relative humidity of air (in percentage) is
Open complete paper
13
2012 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2012
The enthalpy (in kJ/kg) of moist air is
Open complete paper
14
2013 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2013
Common Data for Questions 17 and 18: At a location where the atmospheric pressure is 98 kPa and the ambient temperature is 30°C, the humidity ratio is 0.01 kg/kg of dry air. A high pressure front moves over the location which changes only the atmospheric pressure to 102kPa, while the humidity ratio remains same.

What is the partial pressure of water vapour in kPa to the first decimal place accuracy before the high pressure front moves in? ________
Open complete paper
15
2013 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2013
Common Data for Questions 17 and 18: At a location where the atmospheric pressure is 98 kPa and the ambient temperature is 30°C, the humidity ratio is 0.01 kg/kg of dry air. A high pressure front moves over the location which changes only the atmospheric pressure to 102kPa, while the humidity ratio remains same.

What is the relative humidity of air under the influence of high pressure front to integer precision in %? ________
Open complete paper
16
2013 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2013
What is the ratio of the volumes of chambers A and B, i.e. $V_A/V_B$, to first decimal place accuracy?

Question diagram

Open complete paper
17
2014 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2014
The molecular weight of a mixture is 38.4 gm/mol. The mixture is composed of methane and carbon-dioxide gases. The atomic weights of the elements C, H, and O are 12, 1, and 16 gm/mol, respectively. The mole fraction of methane (\(X_{methane}\)) is __________ and that of carbon-dioxide (\(X_{carbon-dioxide}\)) is __________.
Open complete paper
18
2014 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2014
Which among the following plots represents a line joining two states with the same dew point temperature on a standard psychrometric chart, with the dry bulb temperature on the X-axis and the humidity ratio on the Y-axis?
Open complete paper
19
2014 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2014
Two moist air streams MAS1 and MAS2 are mixed adiabatically. The details of MAS1 and MAS2 are given below the table.

With pressure remaining same and with no work interactions during the mixing process, the enthalpy of the mixed stream is ___________ kJ/kg of dry air.

Question diagram

Open complete paper
20
2015 · Engineering Sciences · Mixtures of Ideal Gases · Gas-mixture Properties and Psychrometrics
Engineering Sciences (XE) 2015
Consider the process of sensible cooling of air with 60% relative humidity at constant pressure. Which one of the following statements is TRUE for this process?
Open complete paper

Showing 20 of 57 questions