Topic Erosion
Asked 4 times across 3 UPSC exams over 29 years (1994–2023), peaking in 1994.
Key insights
- Most tested in CDS — 2 of 4 PYQs
- Most asked in 1994
- Recurs across 4 years (1994–2023)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CSE 1994 → CDS 2019 → NDA 2022
How the concept evolved
Rising — more than half its appearances (3 of 4) 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.
CDS2023
Which one of the following landforms is/are formed by wind erosion ?
- A Cirque
- B Stack
- C Zeugen ✓
- D Stack and Zeugen both
✓ Correct answer: (C)
Geography › Geomorphology
NDA2022
While travelling to a hilly region, you notice a massive boulder, which was loosened by heavy rains and moved downhill. This has resulted due to which of the following processes?
- Mass wasting
- Erosion
- Weathering
Select the correct answer using the code given below.
- A 1 only
- B 1 and 2 only
- C 2 and 3 only
- D 1, 2 and 3 ✓
✓ Correct answer: (D)
Geography › Geomorphology
CDS2019
Which one of the following river valleys of India is under the influence of intensive gully erosion?
- A Kosi
- B Chambal ✓
- C Damodar
- D Brahmaputra
✓ Correct answer: (B)
Geography › Geomorphology
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