Exam Mastery & Practice Hub
GS Paper I and CSAT blueprint, topic priority matrix, quick-revision cards and a real-PYQ practice arena for the first gate to IAS, IPS, IFS and other services.
This is the GS Paper I scheme (100 Qs × 2 marks). CSAT carries 2.5 marks per question with −0.83 per wrong answer. In both papers one-third of the question's marks is deducted for each wrong answer, a question with more than one answer marked is treated as wrong, and a blank question costs nothing. You must appear in both papers to be evaluated.
Pick where you are. Each plan is built around past papers, a formula diary and honest mock analysis.
Build the static base once, link it to current affairs, and treat Prelims, Mains and Interview as one journey.
Static plus current linking
For every news item, write one line on the static topic it belongs to (e.g. Paris Agreement Article 6 under Environment > Conventions). UPSC frames many questions this way, so your notes should too.
PYQ-option notes
For every PYQ, note why each wrong option is wrong, not only the correct one. Options from old papers often come back as statements in new ones.
One-page subject maps
Fit each GS subject's core onto one page: key articles, institutions, dates, maps. Revise these pages in the last 30 days instead of full books.
Error notebook for CSAT
Log every wrong CSAT question with the trick that solves it (unit digit cycle, LCM minus constant, relative speed). Re-solve the notebook every Sunday.
Estimates from subject-wise question counts of UPSC Prelims GS Paper I 2023-2025 compiled by IASGyan and SuperKalam (which classify some questions differently); UPSC does not publish weightage.
Where your marks come from (estimate)
Must-do topics carry roughly 259 of 400 marks. Make Polity, Economy, Environment and Science your strong zone with high accuracy, clear CSAT safely, and the GS cut-off is within reach before you touch the low-priority list.
UPSC does not publish topic weightage; these are estimates from analyses of the 2023-2025 papers and the mix changes noticeably every year.
🔴 Must-Do · High weightage
🟡 Medium · Scoring
🟢 Low priority · Lengthy
Quick on-screen revision cards for the must-do topics. Copy them into your own revision notebook.
Union Executive and Parliament
💡 An ordinance has the same force as an Act, so it also cannot violate Fundamental Rights (Art 13).
Rights, Duties and Directive Principles
💡 Watch for 'enforceable' vs 'non-justiciable' in statements: that word decides most DPSP questions.
Federal and Local Government
💡 Fifth vs Sixth Schedule is a favourite trap: Sixth covers only the four north-eastern states.
Budget and Deficits
💡 Non-debt capital receipts are already inside the fiscal deficit figure; don't subtract them again.
Money and Banking
💡 CRR is with RBI, SLR is with the bank: mixing them is the commonest error.
Environment Conventions
💡 Make a table: year, place, purpose. UPSC often swaps the purpose of two conventions.
Geography Concepts
💡 Porous means it has pores; permeable means water can pass through. They are not the same.
History Anchors
💡 Tie every name to a ruler or a decade; UPSC loves 'during the reign of' questions.
Tap an option: it locks, turns green or red, and the full solution opens. Your attempts stay on this device.
With reference to the Indian polity, consider the following statements: I. An Ordinance can amend any Central Act. II. An Ordinance can abridge a Fundamental Right. III. An Ordinance can come into effect from a back date. Which of the statements given above are correct?
The guessing maths
GS Paper I: +2 for right, −0.67 for wrong. A blind guess among 4 options averages 0.25 × 2 − 0.75 × 0.67 ≈ 0, so it gains nothing. After eliminating 2 options, a 50-50 guess averages 0.5 × 2 − 0.5 × 0.67 ≈ +0.67. CSAT works the same way: blind guess ≈ 0, a 50-50 guess ≈ +0.83. So guess only when you have removed at least one option with a real reason.
CSAT is a 66-mark gate
You need 33% of 200, which is 66 marks: about 27 correct answers with no wrong ones. Secure it with RC and the easy number questions first, and don't take risky guesses once you are comfortably above it.
Two passes in GS Paper I
Pass 1 (about 70 minutes): answer what you know and mark the rest. Pass 2 (about 40 minutes): use elimination on the marked ones. Keep the last 10 minutes to check your OMR bubbles match the booklet numbers.
CSAT order of attack
Start with RC passages and the quick number questions, then reasoning, and leave long puzzles for last. Roughly 1.5 minutes per question; drop any question that crosses 3 minutes.
Rules from the notice
Appear in both papers: missing either one means you are not evaluated. Mark only one answer per question; more than one answer counts as wrong and is penalised. A blank costs nothing.