Topic pH
Asked 3 times across 2 UPSC exams, peaking in 2021.
Key insights
- Most tested in GEO — 2 of 3 PYQs
- Most asked in 2021
- Recurs across 1 years (2021–2021)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CISF 2021 → GEO 2021
How the concept evolved
Rising — more than half its appearances (3 of 3) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CISF2021
pH of blood is
- A 7·0
- B 6·5
- C 7·15
- D 7·40 ✓
✓ Correct answer: (D)
Science & Technology › Biology & Health
GEO2021
pH of blood is:
- A 7.0
- B 6.8
- C 7.4
- D 6.4
Answer key not yet available (pending official release)
Science & Technology › Biology & Health
GEO2021
The natural rain water has a pH value of:
- A 5.6
- B 6.5
- C 7.0
- D Zero
Answer key not yet available (pending official release)
Environment & Ecology › Pollution & Waste
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