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General Studies Paper I · Topic

General science

Official syllabus

General Science.

UPSC CSE 2026 notification

What this covers

The branch connects physical, chemical and biological principles to observable everyday phenomena. Begin with a mechanism, its conditions and a discriminating example; a memorised label without those boundaries is weak preparation for a statement-based Prelims item.

Key ideas

  • Physical science foundations
  • Chemical science foundations
  • Biological science foundations
  • Science in everyday life

Subtopics 4

  1. 01Physical science foundationsPhysical science describes motion, energy and interactions through measurable quantities.
  2. 02Chemical science foundationsAn element contains one kind of atom; a compound has elements chemically combined in a defined composition; a mixture combines substances without…
  3. 03Biological science foundationsA cell is a basic structural and functional unit;
  4. 04Science in everyday lifeEveryday phenomena become useful science examples when the observed change is connected to a testable mechanism.

Official wording is from UPSC's Civil Services Examination 2026 notification, the current baseline for CSE 2027 preparation. Always check the latest notification at upsc.gov.in. Scopes and key ideas are CSE One's study map and are being expanded.