UPSC FAQ: 33 most-asked questions

The flagship Civil Services Exam (IAS / IPS / IFS and other services), plus CDS, NDA & NA, CAPF (AC), the Engineering Services Exam (ESE), the Combined Medical Services (CMS), and a few others. The Civil Services Exam draws the most aspirants.

Three: Prelims (objective screening - GS Paper I + qualifying CSAT), Mains (nine descriptive papers, 1750 merit marks), and the Personality Test / Interview (275 marks). Final rank uses Mains + Interview only.

No. Prelims is purely a screening filter. Only Mains (1750) and Interview (275) contribute to the final merit of 2025 marks.

Paper II of Prelims - aptitude, reasoning, comprehension and basic numeracy. It is qualifying only: you must score 33% but the marks do not count for the Prelims cut-off.

CDS and NDA recruit officers for the armed forces - a written exam (English, GK, Maths / GAT) followed by the SSB interview. NDA is for 10+2 students; CDS is for graduates.

Yes - one-third (1/3) of the marks for that question is deducted for every wrong answer in both GS Paper I and CSAT. Unattempted questions carry no penalty.

GS Paper I: 100 questions, 200 marks, 2 hours. CSAT Paper II: 80 questions, 200 marks, 2 hours. GS Paper I alone decides the Prelims cut-off.

It varies year to year with paper difficulty. As an indicative target, aim for 110+/200 in GS Paper I mocks so you stay above the worst-case General cut-off with a buffer.

Mains is fully descriptive - answer writing within word and time limits, evaluated for content, structure and articulation. Two language papers are qualifying; the Essay, four GS papers and two Optional papers (1750 marks) count for merit.

The most common avoidable exit is CSAT slipping below 33%. The second is poor negative-marking discipline turning a borderline GS score into a near-miss.

Generally 21-32 years for the General category as on 1 August of the exam year, with relaxations: +3 years OBC, +5 years SC/ST, and further relaxation for PwD and certain other categories.

General: 6 attempts. EWS: 6. OBC: 9. SC/ST: unlimited up to the age limit. PwBD has separate provisions. Each appearance in Prelims counts as one attempt.

A bachelor degree in any discipline from a recognised university. Final-year students can apply for Prelims and submit proof before Mains.

Yes - many working professionals clear it. The single-attempt-per-year cycle and the parallel Prelims+Mains demand make time management the real constraint.

Yes. NDA: unmarried, ~16.5-19.5 years, 10+2. CDS: graduate, ~19-25. CAPF AC: graduate, ~20-25. Each notification specifies exact age, marital and physical norms.

In Mains you choose one Optional subject with two papers (500 marks). The choice should balance your interest, scoring trend, overlap with GS, and availability of guidance/material.

Very - 500 of the 1750 Mains marks. A consistently well-scoring Optional often separates ranked candidates with similar GS scores.

Yes. With only ~3 months between Prelims and Mains, serious candidates build the Optional and answer-writing habit well before Prelims, then switch fully to Prelims revision in the last 6-8 weeks.

Central. A large share of Prelims and GS Mains questions are rooted in the last 12-18 months of current affairs linked to static syllabus topics. Daily newspaper analysis is non-negotiable.

Civil Services leads to the IAS/IPS/IFS and allied services. CDS/NDA lead to commissioned officer roles in the armed forces. They are different career paths, not difficulty tiers.

The Engineering Services Exam recruits engineers (Civil / Mechanical / Electrical / E&T) into technical government services. It needs an engineering degree and a Prelims + Mains + Interview cycle.

The Combined Medical Services exam recruits MBBS doctors into central health services. Two objective papers followed by a Personality Test.

Partly. The GS/current-affairs base helps across CAPF and the GK portions of CDS/NDA, but each exam has exam-specific sections (Maths for NDA, technical papers for ESE) needing dedicated prep.

General and EWS candidates get 6 attempts. OBC candidates get 9. SC and ST candidates have unlimited attempts up to the age limit (37 for SC/ST). PwBD candidates from Gen/EWS/OBC get 9 attempts; PwBD-SC/ST is unlimited. Each Prelims appearance counts as one attempt regardless of how far you progress.

CSAT (Prelims Paper II - 80 questions, 200 marks) is qualifying only. You must score at least 33% (66 marks) for your GS Paper I score to be considered for the Prelims cut-off. CSAT marks above 33% do not count toward the merit list - they earn nothing. A candidate who scores 32.5% in CSAT fails Prelims even with a perfect GS Paper I.

Yes. Final-year graduation students are eligible to sit the Prelims. However, they must have completed the qualifying examination (passed final-year results) before the Mains application stage (DAF-I). If you clear Prelims but cannot produce graduation proof by Mains, your candidature is rejected for that cycle.

You choose ONE optional subject from the UPSC list (e.g. History, Geography, Public Administration, PSIR, Sociology, Anthropology, plus literature of various Indian languages and the technical optionals like Mathematics, Physics, Medical Science). That single optional has TWO papers - Paper VI and Paper VII - each worth 250 marks. Total optional weight = 500 of 1750 Mains merit marks.

Final rank uses Mains (1750) + Personality Test / Interview (275) = 2025 marks. Prelims marks are NOT counted - they only screen for Mains. The two qualifying language papers (Paper A Indian language + Paper B English, 300 marks each) only need 25% to pass; their marks do not count toward merit. Ties are broken using age (older candidate ranks higher), then alphabetical order of names.

OTR (One Time Registration) is the UPSC persistent profile system at upsconline.gov.in, introduced in 2024. You fill personal, education, address and contact details ONCE - the data is reused for every UPSC exam (CSE, CDS, NDA, CAPF, ESE, CMS). Each exam-specific form then becomes a 10-15 minute top-up instead of a 45-60 minute full application. Photo and signature must meet UPSC specs (20-300 KB, JPG/JPEG).

Yes. CDS and CSE are separate exams with different notifications, application forms and timelines. CDS happens three times a year (typically February, August, November) while CSE Prelims is once a year (late May). The eligibility and age criteria differ - CDS is graduate, ~19-25 years; CSE is graduate, 21-32 General. Many aspirants run CSE as the primary track and use CDS as a parallel option from the same GS / current affairs base.

NDA candidates must be aged 16.5 to 19.5 years on a notified reference date, unmarried, and Indian citizens (with some provisions for specified non-citizens). Class 12 from a recognised board is required - the Air Force and Navy wings additionally need Physics, Chemistry and Mathematics at 10+2. The Army wing accepts any 10+2 stream. There is no age relaxation for category in NDA - the 19.5 upper limit is hard for everyone.

Decisive for Prelims. The cut-off is razor-thin and the 1/3 negative marking punishes poor attempt strategy. Full-length timed mocks build the elimination instinct and time discipline no amount of reading can.

Aim for 30-50 full-length GS Paper I mocks across the cycle, intensifying in the final 8-10 weeks, each followed by a deep post-mortem (every wrong/skipped question analysed).

Anyone guaranteeing UPSC selection, selling "leaked" papers, or claiming UPSC affiliation for paid coaching is running a scam. Report to the UPSC via upsc.gov.in and to local authorities. UPSC has zero tolerance for malpractice.