The UPSC Civil Services Examination has three stages: Prelims, Mains, and the Interview. Prelims is a screening test — your score here doesn't count toward your final rank, but you have to clear it to sit for Mains. That makes it worth understanding exactly what's being tested before you dive into revision.
Prelims has two papers
Paper 1 (General Studies) is the one that actually determines whether you qualify. It has 100 questions worth 200 marks, to be attempted in 2 hours, with a penalty of one-third of the allotted marks for every wrong answer.
Paper 2 (CSAT) is qualifying in nature — you just need 33% to clear it, and it doesn't factor into your merit ranking directly. Many aspirants underestimate CSAT early on and pay for it later, so don't skip it entirely even if you're stronger on GS.
GS Paper 1: subject-wise breakdown
- History & Art and Culture — Ancient, Medieval, and Modern Indian history, plus art forms, architecture, and freedom movement.
- Geography — Physical, Indian, and World geography, with a growing emphasis on map-based questions.
- Polity & Governance — The Constitution, government institutions, and current bills and amendments.
- Economic and Social Development — Budget, banking, government schemes, and social sector indicators.
- Environment, Ecology, Biodiversity, and Climate Change — one of the fastest-growing sections in recent years.
- General Science — basic science concepts along with current developments in space, defence, and technology.
- Current events of national and international importance — the thread that runs through every other subject above.
CSAT Paper 2: what it actually tests
CSAT covers comprehension, interpersonal and communication skills, logical reasoning and analytical ability, decision-making and problem-solving, general mental ability, and basic numeracy at a class 10 level. It's designed to test aptitude, not subject knowledge — so practice matters more than memorization here.
How to approach subject-wise revision
Trying to revise the entire syllabus in one pass rarely works. A more effective approach is to break each subject into daily, topic-sized chunks — enough to complete in 30-45 minutes — so you build consistent recall instead of cramming right before the exam. Pairing daily MCQ practice with answer-key review (not just checking right or wrong, but understanding why) is what actually moves your accuracy over time.
If you want a structured way to do this daily across all seven Prelims subjects, our DPP subscription breaks the syllabus into topic-wise daily sheets with MCQs and explanations, so revision becomes a habit rather than a last-minute scramble.