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Topic Air masses
Asked 2 times across 2 UPSC exams over 8 years (2015–2023), peaking in 2015.
Key insights
- Most tested in CDS — 1 of 2 PYQs
- Most asked in 2015
- Recurs across 2 years (2015–2023)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CDS 2015 → GEO 2023
How the concept evolved
Long-running — most appearances (1 of 2) predate 2016, and it still returns.
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.
GEO2023
The uplift mechanism that takes place when lighter warm moist air mass rises after encountering a colder and denser air mass causes
- A conventional precipitation
- B frontal precipitation ✓
- C cyclonic precipitation
- D orogenic precipitation
✓ Correct answer: (B)
Geography › Climatology
CDS2015
Consider the following statements with regard to cold waves in winter season in northern India
- There is lack of maritime influence
- Northern India is nearer to the Himalayan region
- Air mass comes from polar regions to northern India
Which of the statements given above is/are correct ?
- A 1 only
- B 2 and 3
- C 1 and 3
- D 1 and 2 ✓
✓ Correct answer: (D)
Geography › Climatology
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