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Topic Soil erosion
Asked 3 times across 2 UPSC exams over 35 years (1979–2014), peaking in 1979.
Key insights
- Most tested in CSE — 2 of 3 PYQs
- Most asked in 1979
- Recurs across 3 years (1979–2014)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CSE 1979 → CDS 2014
How the concept evolved
Largely a pre-2016 idea — watch for a comeback.
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.
CDS2014
Which of the following are the most important reason/reasons of flood becoming a destructive natural hazard in the Ganga-Brahmaputra valley?
- Due to population pressure more and more people are living in flood prone areas
- Increased frequency and magnitude of landslide and soil erosion in the upper catchments
- Increase in the amount and intensity of rainfall in the north-western part of India
- A 1 only
- B 1 and 2 only ✓
- C 2 and 3 only
- D 1, 2 and 3
✓ Correct answer: (B)
Geography › Physical Geography of India
CSE2001
Identify the correct order of the processes of soil erosion from the following
- A Splash erosion, Sheet erosion, Rill erosion, Gully erosion
- B Sheet erosion, Splash erosion, Gully erosion, Rill erosion
- C Rill erosion, Gully erosion, Sheet erosion, Splash erosion
- D Gully erosion, Rill erosion, Sheet erosion, Splash erosion
Answer key not yet available (pending official release)
Geography › Geomorphology
CSE1979
The cutting of forests leads to
- A Soil erosion and uncontrollable floods ✓
- B De silting and denaturation
- C Increase of rainfall and humidity
- D None of these
✓ Correct answer: (A)
Environment & Ecology › Ecology & Ecosystems
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