C1CSE One Learn

Optional subjects

Optional subjects

What this covers

The official optional-subject catalog expands into 48 subject-specific syllabi, each with independent Paper I and Paper II roots and clause-mapped study pages.

Key ideas

  • 48 official optional subjects
  • 96 subject-specific papers
  • clause-mapped editorial hierarchies

Optional subjects 48

Full outlines for each optional are being checked against the notification and will open here. Until then, talk to an optional expert.

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.