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Water Pollution

5 PYQ across 4 exams · 1998–2025 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CSE 1998 → CAPF 2017 → EPFO 2023 → ESE 2025
19981 PYQ
CSEQ19
The water pollution in river is measured by the dissolved amount of…
20172 PYQs
CAPFQ66
Which of the following diseases are caused by the consumption of water contaminated by mercury and nitrate?…
CSEQ59
Biological Oxygen Demand (BOD) is a standard criterion for…
20231 PYQ
EPFOQ87
The effluents of which among the following industries are considered to be the main cause for lowering the pH value of river water?…
20251 PYQ
ESEQ50
Nitrate when present in excess in drinking water causes…
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