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Topic

Rock formation

Asked 3 times across 2 UPSC exams over 1 years (2025–2026), peaking in 2026.
3
PYQs
2
Exams
2
Years active
2025–2026
Span
2026
Peak
3/3
Answers
📅 Full chronological timeline →

Key insights

  • Most tested in NDA — 2 of 3 PYQs
  • Most asked in 2026
  • Recurs across 2 years (2025–2026)

How it travelled across exams

First appearance in each exam — the same idea, reframed.
NDA 2025 CDS 2026

How the concept evolved

125
226
Rising — more than half its appearances (3 of 3) are since 2016.

Sample questions

You've seen the pattern — here are a few of the actual PYQs.
CDS2026
Which one among the following statements regarding igneous rock is correct ?
  1. A When magma cools deep in the Earth's interior, it results in the formation of fine-grained igneous rocks.
  2. B Basalt is a type of intrusive igneous rock.
  3. C Most of the minerals of igneous rocks are silicates. ✓
  4. D Extrusive igneous rocks often undergo lithification.
✓ Correct answer: (C)
Geography › Geomorphology
NDA2026
Loose sediments are transformed into sedimentary rocks by the process of
  1. A lithification ✓
  2. B weathering
  3. C mass wasting
  4. D solifluction
✓ Correct answer: (A)
Geography › Geomorphology
NDA2025
Which one of the following is formed when running water is carried by a sedimentary layer?
  1. A Basalt
  2. B Lapilli
  3. C Slate
  4. D Tuff ✓
✓ Correct answer: (D)
Geography › Geomorphology

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