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Previous year question hub

Gaseous Pollutants - Air and Noise Pollution - Environmental Science & Engineering Previous Year Questions

Practice Gaseous Pollutants - Air and Noise Pollution - Environmental Science & Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

2Papers
2Years
3Questions
1Topics

Gaseous Pollutants question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Gaseous Pollutants. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 2 66.7%
Easy 1 33.3%

Question type distribution

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

MCQ 1 33.3%
Numerical Answer Type (NAT) 1 33.3%
MSQ 1 33.3%

Subject weightage

Top subjects by unique question coverage.

Environmental Science & Engineering
3 Qs

Most asked topics

Top topics across the included previous year papers.

Air and Noise Pollution
3 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Gaseous Pollutants
3 Qs

Paper coverage

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

Environmental Science & Engineering (ES) 2026
1 Qs
Environmental Science & Engineering (ES) 2022
2 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
Environmental Science & Engineering (ES) 202620261View paper
Environmental Science & Engineering (ES) 202220222View paper

All Gaseous Pollutants previous year questions

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

1
2022 · Environmental Science & Engineering · Air and Noise Pollution · Gaseous Pollutants
Environmental Science & Engineering (ES) 2022
Which one of the following is most commonly used raw material in flue gas desulfurization units?
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2
2022 · Environmental Science & Engineering · Air and Noise Pollution · Gaseous Pollutants
Environmental Science & Engineering (ES) 2022
A ground level source emits 1000 g per day of SO₂. In vicinity of the source, ambient temperature is measured at 10 m and 110 m as 25°C and 24.5°C, respectively. The mean wind speed is found to be 2 m per second. The dispersion coefficients at 1000 m downwind distance from the source are given in table below:
Dispersion coefficients (in m)
StableNeutralUnstable
Crosswind direction50.580.0156.0
Vertical direction21.441.5110.2
Estimated ground level concentration (in µg/m³, rounded off to two decimal places) of SO₂ at a downwind distance of 1000 m (at the plume centerline) from the source is __________.

Question source image

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3
2026 · Environmental Science & Engineering · Air and Noise Pollution · Gaseous Pollutants
Environmental Science & Engineering (ES) 2026
Which of the following chemical reactions is/are related to smog formation in the troposphere?
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