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Water treatment

4 PYQ across 2 exams · 1980–2025 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CSE 1980 → CDS 2014
19801 PYQ
CSEQ40
Municipal water in India is generally treated with…
20121 PYQ
CSEQ13
What is the role of ultraviolet (UV) radiation in the water purification systems? 1. It inactivates/kills the harmful microorganisms in wate…
20141 PYQ
CDSQ85
Which method of water purification does not kill microorganism?…
20251 PYQ
CSEQ50
Consider the following statements : Statement I : Activated carbon is a good and an attractive tool to remove pollutants from effluent strea…
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