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Previous year question hub

Air Pollution - Environmental Engineering - Civil Engineering Previous Year Questions

Practice Air Pollution - Environmental Engineering - Civil Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

20Papers
16Years
34Questions
1Topics

Air Pollution question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Air Pollution. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 25 73.5%
Medium 8 23.5%
Hard 1 2.9%

Question type distribution

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

MCQ 24 70.6%
Numerical Answer Type (NAT) 8 23.5%
Fill in the blanks 1 2.9%
MSQ 1 2.9%

Subject weightage

Top subjects by unique question coverage.

Civil Engineering
34 Qs

Most asked topics

Top topics across the included previous year papers.

Environmental Engineering
34 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Air Pollution
34 Qs

Paper coverage

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

Civil Engineering (CE) 2026
2 Qs
Civil Engineering (CE) 2025 [Session 1]
1 Qs
Civil Engineering (CE) 2025 [Session 2]
1 Qs
Civil Engineering (CE) 2024 [Session 1]
2 Qs
Civil Engineering (CE) 2024 [Session 2]
2 Qs
Civil Engineering (CE) 2022 [Session 2]
2 Qs
Civil Engineering (CE) 2020 [Session 2]
1 Qs
Civil Engineering (CE) 2019 [Session 2]
1 Qs
Civil Engineering (CE) 2018 [Session 2]
2 Qs
Civil Engineering (CE) 2017 [Session 2]
2 Qs
Civil Engineering (CE) 2016 [Session 1]
3 Qs
Civil Engineering (CE) 2016 [Session 2]
3 Qs
Civil Engineering (CE) 2015 [Session 1]
1 Qs
Civil Engineering (CE) 2014 [Session 1]
1 Qs
Civil Engineering (CE) 2014 [Session 2]
1 Qs
Civil Engineering (CE) 2013
1 Qs
Civil Engineering (CE) 2011
2 Qs
Civil Engineering (CE) 2010
2 Qs
Civil Engineering (CE) 2009
3 Qs
Civil Engineering (CE) 2008
1 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
Civil Engineering (CE) 202620262View paper
Civil Engineering (CE) 2025 [Session 1]20251View paper
Civil Engineering (CE) 2025 [Session 2]20251View paper
Civil Engineering (CE) 2024 [Session 1]20242View paper
Civil Engineering (CE) 2024 [Session 2]20242View paper
Civil Engineering (CE) 2022 [Session 2]20222View paper
Civil Engineering (CE) 2020 [Session 2]20201View paper
Civil Engineering (CE) 2019 [Session 2]20191View paper
Civil Engineering (CE) 2018 [Session 2]20182View paper
Civil Engineering (CE) 2017 [Session 2]20172View paper
Civil Engineering (CE) 2016 [Session 1]20163View paper
Civil Engineering (CE) 2016 [Session 2]20163View paper
Civil Engineering (CE) 2015 [Session 1]20151View paper
Civil Engineering (CE) 2014 [Session 1]20141View paper
Civil Engineering (CE) 2014 [Session 2]20141View paper
Civil Engineering (CE) 201320131View paper
Civil Engineering (CE) 201120112View paper
Civil Engineering (CE) 201020102View paper
Civil Engineering (CE) 200920093View paper
Civil Engineering (CE) 200820081View paper

All Air Pollution previous year questions

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

1
2014 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2014 [Session 1]
The amount of \(CO_2\) generated (in kg) while completely oxidizing one kg of \(CH_4\) to the end products is __________
Open complete paper
2
2014 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2014 [Session 2]
The two air pollution control devices that are usually used to remove very fine particles from the flue gas are
Open complete paper
3
2015 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2015 [Session 1]
The concentration of Sulfur Dioxide (SO₂) in ambient atmosphere was measured as 30 μg/m³. Under the same conditions, the above SO₂ concentration expressed in ppm is __________. Given: P/(RT) = 41.6 mol/m³, where, P = Pressure, T = Temperature, R = universal gas constant; Molecular weight of SO₂ = 64.
Open complete paper
4
2016 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2016 [Session 1]
Pre-cursors to photochemical oxidants are
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5
2016 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2016 [Session 1]
It was decided to construct a fabric filter, using bags of 0.45 m diameter and 7.5 m long, for removing industrial stack gas containing particulates. The expected rate of airflow into the filter is 10 m3/s. If the filtering velocity is 2.0 m/min, the minimum number of bags (rounded to nearest higher integer) required for continuous cleaning operation is
Open complete paper
6
2016 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2016 [Session 1]
An electrostatic precipitator (ESP) with 5600 m² of collector plate area is 96 percent efficient in treating 185 m³/s of flue gas from a 200 MW thermal power plant. It was found that in order to achieve 97 percent efficiency, the collector plate area should be 6100 m². In order to increase the efficiency to 99 percent, the ESP collector plate area (expressed in m²) would be ______
Open complete paper
7
2016 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2016 [Session 2]
The atmospheric layer closest to the earth surface is
Open complete paper
8
2016 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2016 [Session 2]
The sound pressure (expressed in µPa) of the faintest sound that a normal healthy individual can hear is
Open complete paper
9
2016 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2016 [Session 2]
A noise meter located at a distance of 30 m from a point source recorded 74 dB. The reading at a distance of 60 m from the point source would be ______
Open complete paper
10
2017 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2017 [Session 2]
As per Noise Pollution (Regulation and Control) Rules 2000 of India, the day time noise limit for a residential zone, expressed in dB(A) Leq, is
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11
2017 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2017 [Session 2]
Following observations have been made for the elevation and temperature to ascertain the stability of the atmosphere:
Elevation (in m)Temperature (in °C)
1015.5
6015.0
13014.3

The atmosphere is classified as
Open complete paper
12
2018 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2018 [Session 2]
In the figures, Group I represents the atmospheric temperature profiles (P, Q, R and S) and Group II represents dispersion of pollutants from a smoke stack (1, 2, 3 and 4). In the figures of Group I, the dashed line represents the dry adiabatic lapse rate, whereas the horizontal axis represents temperature and the vertical axis represents the altitude.
The correct match is

Question diagram

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13
2018 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2018 [Session 2]

A coal containing 2% sulfur is burned completely to ash in a brick kiln at a rate of 30 kg/min. The sulfur content in the ash was found to be 6% of the initial amount of sulfur present in the coal fed to the brick kiln. The molecular weights of S, H and O are 32, 1 and 16 g/mole, respectively. The annual rate of sulfur dioxide (SO2) emission from the kiln (in tonnes/year, up to two decimal places) is ______

Open complete paper
14
2019 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2019 [Session 2]

Which one of the following options contains ONLY primary air pollutants?

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15
2020 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2020 [Session 2]

A gas contains two types of suspended particles having average sizes of 2 μm and 50 μm. Amongst the options given below, the most suitable pollution control strategy for removal of these particles is

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16
2022 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2022 [Session 2]

A process equipment emits 5 kg/h of volatile organic compounds (VOCs). If a hood placed over the process equipment captures 95% of the VOCs, then the fugitive emission in kg/h is

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17
2022 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2022 [Session 2]
A sample of air analyzed at 25 °C and 1 atm pressure is reported to contain 0.04 ppm of SO₂. Atomic mass of S = 32, O = 16.
The equivalent SO₂ concentration (in μg/m³) will be __________. (round off to the nearest integer)
Open complete paper
18
2024 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2024 [Session 1]

The primary air pollutant(s) is/are

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19
2024 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2024 [Session 1]
For assessing the compliance with the emissions standards of incineration plants, a correction needs to be applied to the measured concentrations of air pollutants. The emission standard (based on 11% Oxygen) for HCl is 50 mg/Nm³ and the measured concentrations of HCl and Oxygen in flue gas are 42 mg/Nm³ and 13%, respectively. Assuming 21% Oxygen in air, the CORRECT statement is:
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20
2024 · Civil Engineering · Environmental Engineering · Air Pollution
Civil Engineering (CE) 2024 [Session 2]

What is the CORRECT match between the air pollutants and treatment techniques given in the table?

Air pollutantsTreatment techniques
P - NO2i - Flaring
Q - SO2ii - Cyclonic separator
R - COiii - Lime scrubbing
S - Particlesiv - NH3 injection
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Showing 20 of 34 questions