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pH scale

5 PYQ across 3 exams · 2017–2025 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CDS 2017 → NDA 2021 → GEO 2022
20171 PYQ
CDSQ14
The pH value of a sample of multiple-distilled water is…
20211 PYQ
NDAQ101
The pH value of Milk of Magnesia is approximately…
20221 PYQ
GEOQ32
As per the safe drinking water guidelines issued by the Bureau of Indian Standards, Government of India, what is the acceptable pH value of …
20231 PYQ
CDSQ51
Which one of the following is the correct order of pH for the given substances?…
20251 PYQ
NDAQ78
Which one of the following statements is NOT correct?…
Related concepts — explore their timelines too
Bureau of Indian Standards
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