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Previous year question hub

Water & Wastewater Treatment and Management - Environmental Science & Engineering Previous Year Questions

Practice Water & Wastewater Treatment and Management - Environmental Science & Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

6Papers
6Years
45Questions
1Topics

Water & Wastewater Treatment and Management 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 25 55.6%
Easy 20 44.4%

Question type distribution

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

MCQ 19 42.2%
Numerical Answer Type (NAT) 17 37.8%
MSQ 9 20%

Subject weightage

Top subjects by unique question coverage.

Environmental Science & Engineering
45 Qs

Most asked topics

Top topics across the included previous year papers.

Water & Wastewater Treatment and Management
45 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Kinetics and reactor design
15 Qs
Drinking-water Treatment and Distribution
10 Qs
Water Quality and Receiving-water Pollution
9 Qs
Sewerage and Sewage Treatment
7 Qs
Industrial Effluents, Recycling and Zero Liquid Discharge
4 Qs

Paper coverage

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

Environmental Science & Engineering (ES) 2026
7 Qs
Environmental Science & Engineering (ES) 2025
5 Qs
Environmental Science & Engineering (ES) 2024
7 Qs
Environmental Science & Engineering (ES) 2023
6 Qs
Environmental Science & Engineering (ES) 2022
10 Qs
Environmental Science & Engineering (ES) 2021
10 Qs

Browse by subtopics

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

Included previous year papers

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

Paper nameYearPDFAttempt
Environmental Science & Engineering (ES) 20262026
7 questions in this view
2026
Environmental Science & Engineering (ES) 20252025
5 questions in this view
2025
Environmental Science & Engineering (ES) 20242024
7 questions in this view
2024
Environmental Science & Engineering (ES) 20232023
6 questions in this view
2023
Environmental Science & Engineering (ES) 20222022
10 questions in this view
2022
Environmental Science & Engineering (ES) 20212021
10 questions in this view
2021

Sample previous year questions

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

1
2024 · Environmental Science & Engineering · Water & Wastewater Treatment and Management · Water Quality and Receiving-water Pollution
Environmental Science & Engineering (ES) 2024

Hardness in water is NOT caused by _____.

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2
2025 · Environmental Science & Engineering · Water & Wastewater Treatment and Management · Industrial Effluents, Recycling and Zero Liquid Discharge
Environmental Science & Engineering (ES) 2025

Multiple effect evaporator is commonly used, in the zero liquid discharge (ZLD) scheme, for ________

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3
2021 · Environmental Science & Engineering · Water & Wastewater Treatment and Management · Sewerage and Sewage Treatment
Environmental Science & Engineering (ES) 2021
Which of the following causes ‘Type-I’ settling in a sedimentation tank?
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4
2022 · Environmental Science & Engineering · Water & Wastewater Treatment and Management · Water Quality and Receiving-water Pollution
Environmental Science & Engineering (ES) 2022
Specific conductance is used in water analysis to indirectly estimate dissolved solids. The measurements used in the method accounts for
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5
2023 · Environmental Science & Engineering · Water & Wastewater Treatment and Management · Water Quality and Receiving-water Pollution
Environmental Science & Engineering (ES) 2023
For testing alkalinity for a water sample, first phenolphthalein indicator is added. The water remains colorless. However, when a few drops of methyl orange is added to the sample, the color turns yellow. As per these observations, the correct choice is
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6
2026 · Environmental Science & Engineering · Water & Wastewater Treatment and Management · Sewerage and Sewage Treatment
Environmental Science & Engineering (ES) 2026
Which of the following processes is/are primarily used to remove the organic matter in sludge?
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