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Water Pollution Questions

Practice 18 Water Pollution questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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18
Total Questions
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2
Easy
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16
Medium
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0
Hard
Practice by Exam:Biology(6)Environmental Science(4)Environmental Studies(4)Environment(2)General Knowledge(1)Chemistry(1)

About Water Pollution — practice questions, PYQs & concepts

Water Pollution is a frequently-tested topic on Biology, Environmental Science, Environmental Studies. ExamTest.live currently lists 18 Water Pollution questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

Water Pollution weight in competitive exams

Across our Water Pollution question bank, the largest sources are Biology (6), Environmental Science (4), Environmental Studies (4), Environment (2) and General Knowledge (1). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 2 easy Water Pollution questions are available — build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right — the explanation often surfaces a faster approach you can reuse.

All Water Pollution Questions(1–18 of 18)

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Q1mediummcqGeneral KnowledgeStaff Selection Commission2026
0% accuracy
Which of the following disease is not caused by water pollution?
Q2mediummcqEnvironmental StudiesCompetitive Exam Practice Paper2026
0% accuracy
Which of the following types of pollution is cultural (accelerated) eutrophication?
Q3mediummcqEnvironmental ScienceCompetitive Exam2026
Profuse growth of aquatic vegetation that often changes the colour of water body is known as:
Q4mediummcqBiologyWBCS Prelims2026
Excess fluoride in drinking water causes
Q5mediummcqEnvironmental StudiesCompetitive Exam2026
Profuse growth of aquatic vegetation that often changes the colour of water body is known as
Q6mediummcqEnvironmental ScienceIndian Competitive Exams2026
Activated sludge plants are used to reduce
Q7mediummcqEnvironmentCompetitive Exam Prep Portal2026
Cattle waste has COD several times higher than BOD because of
Q8mediummcqEnvironmentCompetitive Exam Prep Portal2026
Minamata disease in Japan was the result of water pollution by
Q9mediummcqBiologyExam Prep2026
Excess fluoride in drinking water causes:
Q10mediummcqEnvironmental StudiesCompetitive Exams2026
Minamata disease in Japan was the result of water pollution by:
Q11mediummcqEnvironmental StudiesCompetitive Exams2026
Cattle waste has Chemical Oxygen Demand (COD) several times higher than Biochemical Oxygen Demand (BOD) because of:
Q12mediummcqEnvironmental ScienceCompetitive Exam2026
Activated sludge plants are used to reduce:
Q13mediummcqEnvironmental ScienceCompetitive Exam2026
A common indicator organism of water pollution is
Q14easymcqChemistryNEET 20232026
Which one of the following statements is not correct?
Q15mediummcqBiologyBiology
0% accuracy
Eutrophication is often seen in:
Q16mediummcqBiologyBiology
A lake near a village suffered heavy fish mortality. What were the two main causes?(a) High urea and phosphate fertilizer runoff from nearby crops.(b) Area was sprayed with .(c) The lake water turned green and stinky.(d) Phytoplankton population declined initially.
Q17mediummcqBiologyBiology
Measuring Biochemical Oxygen Demand (BOD) is a method used for:
Q18easymcqBiologyBiology
Biochemical Oxygen Demand () in a river water:

Frequently Asked Questions

How many Water Pollution questions are on ExamTest.live?▼
We have 18 Water Pollution questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Water Pollution MCQs free?▼
Yes. All Water Pollution questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include Water Pollution questions?▼
Water Pollution questions are commonly asked in Biology, Environmental Science, Environmental Studies, Environment, General Knowledge. You can filter by exam using the links above.
How do I practice Water Pollution questions effectively?▼
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.