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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2026 · Paper I, General Studies · Q20 of 120

Geo-Scientist Prelims 2026 General Studies Q20: The Earth in its initial phases of formation was a hot object with…

QuestionGeomorphology / Evolution of the Earth

The Earth in its initial phases of formation was a hot object with a thin layer of atmosphere comprising

  1. (a) oxygen and nitrogen
  2. (b) hydrogen and helium
  3. (c) carbon dioxide and nitrogen
  4. (d) argon and methane

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