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The UPSC Civil Services Preliminary Examination generates thousands of questions every year from aspirants who are new to the process, re-appearing after a gap, or confused by conflicting information online. This page compiles the 50 most frequently asked questions about the UPSC CSE Prelims, grouped by category, with answers based on official UPSC guidelines and authenticated data from upsc.gov.in.
For the complete examination overview, visit the UPSC CSE Prelims main page.
1. What is UPSC CSE Prelims and what is its purpose?
The UPSC Civil Services Preliminary Examination is the first of three stages in the Civil Services Examination conducted by the Union Public Service Commission. Its purpose is to shortlist candidates for the Mains examination. Prelims marks are not carried forward to the final merit list. The final rank is determined solely by Mains (1,750 marks) and the Personality Test (275 marks), totalling 2,025 marks.
2. How many papers are there in the UPSC CSE Prelims?
There are two papers in the Prelims, both held on the same day.
| Paper Name Questions Total Marks Nature | ||||
| Paper 1 | General Studies (GS Paper 1) | 100 | 200 | Merit-determining |
| Paper 2 | CSAT (Civil Services Aptitude Test) | 80 | 200 | Qualifying (33% minimum) |
3. What is the duration of each paper?
Each paper is 2 hours in duration. GS Paper 1 is held from 9:30 AM to 11:30 AM and CSAT from 2:30 PM to 4:30 PM.
4. Is there negative marking in UPSC CSE Prelims?
Yes. Negative marking applies to both papers. For every wrong answer in GS Paper 1, 0.66 marks are deducted (1/3 of 2 marks). For every wrong answer in CSAT, 0.83 marks are deducted (1/3 of 2.5 marks). Unattempted questions attract no penalty.
5. Does UPSC Prelims have sectional cutoffs in GS Paper 1?
No. There is no subject-wise or sectional cutoff in GS Paper 1. The overall score across all 100 questions determines whether the candidate meets the category-wise cutoff.
6. What services are recruited through UPSC CSE?
UPSC CSE recruits candidates for the Indian Administrative Service (IAS), Indian Police Service (IPS), Indian Foreign Service (IFS), Indian Revenue Service (IRS), Indian Audit and Accounts Service (IAAS), and approximately 20 other Group A and Group B Central Services. Final service allocation is based on rank and preference submitted at the interview stage.
7. How many times is the UPSC CSE conducted per year?
The UPSC CSE is conducted once per year. The Preliminary Examination is typically held in May or June.
8. What is the minimum educational qualification for UPSC CSE?
A Bachelor's degree from a university incorporated by an Act of Parliament or State Legislature, or declared to be a deemed university under the UGC Act, 1956. Any discipline is accepted. There is no minimum percentage requirement.
9. Can final-year graduation students apply for UPSC CSE Prelims?
Yes. Candidates in the final year of graduation can apply for and appear in the Prelims. However, they must produce proof of degree completion before submitting the Mains application. Failure to do so results in disqualification from that cycle's Mains stage.
10. What is the age limit for UPSC CSE?
| Category Maximum Age | |
| General / EWS | 32 years |
| OBC | 35 years |
| SC / ST | 37 years |
| PwBD - General / EWS | 42 years |
| PwBD - OBC | 45 years |
| PwBD - SC / ST | 47 years |
Age is calculated as on 1st August of the examination year. The minimum age for all categories is 21 years.
11. What is the maximum number of attempts for UPSC CSE?
| Category Maximum Attempts | |
| General / EWS | 6 |
| OBC | 9 |
| PwBD - General / EWS | 9 |
| SC | Unlimited (within age limit) |
| ST | Unlimited (within age limit) |
| PwBD - SC / ST | Unlimited (within age limit) |
12. Does appearing in only one paper of the Prelims count as an attempt?
Yes. If a candidate appears in even one paper of the Preliminary Examination (GS Paper 1 or CSAT), it is counted as an attempt regardless of whether they appeared in both papers or qualified.
13. Does submitting an application without appearing count as an attempt?
No. An attempt is counted only from the point of actual appearance in the examination hall. Submitting the application form and not attending does not consume an attempt.
14. Is a degree from a foreign university valid for UPSC CSE?
Foreign university degrees may be accepted on a case-by-case basis if the institution is recognised as equivalent to an Indian university. Candidates with foreign degrees should seek clarification from UPSC directly before applying to avoid late-stage disqualification.
15. Can candidates with a distance education degree apply?
Yes, provided the university is recognised by the University Grants Commission (UGC). Degrees from IGNOU and other UGC-recognised open universities are valid for UPSC CSE eligibility.
16. Can MBBS interns apply for UPSC CSE?
Yes. MBBS candidates who have passed the final professional examination but have not yet completed their internship are eligible to apply. They must submit a certificate from the university or institution during the Personality Test stage.
17. Where do I apply for UPSC CSE Prelims?
All UPSC CSE applications are submitted online at upsconline.nic.in. Applications through any other portal, by email, or in physical form are not accepted.
18. What is the OTR / URN registration process?
One-Time Registration (OTR) generates a Universal Registration Number (URN) that is used across all future UPSC examinations. New applicants must complete OTR before applying for any UPSC examination. The URN is permanent and need not be re-created for subsequent attempts.
19. What is the application fee for UPSC CSE?
| Category Application Fee | |
| General (Male) | Rs. 100 |
| OBC (Male) | Rs. 100 |
| EWS (Male) | Rs. 100 |
| Female candidates (all categories) | Exempt |
| SC candidates | Exempt |
| ST candidates | Exempt |
| PwBD candidates | Exempt |
20. What documents must be uploaded during the application?
Mandatory uploads include a passport-size photograph (with the candidate's name and date printed on it, mandatory from 2026), signature, and category certificate if applicable (OBC, SC, ST, EWS, PwBD). The photograph must meet UPSC's specified size and format requirements.
21. Can I change my exam centre after submitting the application?
Centre changes may be possible during the official correction window, subject to availability. After the correction window closes, centre allocation is fixed and cannot be changed.
22. What is the application correction window?
After the main application window closes, UPSC opens a limited correction window for approximately 5 to 10 days. Candidates can correct certain fields such as photograph, signature, and centre preference during this window. Fields like name, date of birth, and category cannot typically be corrected after submission.
23. Can I submit multiple applications for the same UPSC CSE cycle?
No. Multiple applications for the same examination cycle lead to cancellation of all applications. Submit only one application per cycle.
24. Is CSAT marks considered for merit ranking?
No. CSAT is qualifying in nature. A minimum of 33% (66 out of 200) is required to pass. Marks scored in CSAT are not added to the merit list and do not determine who qualifies for Mains. Only GS Paper 1 marks determine merit at the Prelims stage.
25. What are the subjects in CSAT?
CSAT covers Reading Comprehension, Logical Reasoning and Analytical Ability, Decision-Making and Problem-Solving, General Mental Ability, Basic Numeracy (up to Class 10 level), and Data Interpretation.
26. What is the recommended target score in CSAT to be safe?
Targeting 90 marks or above in CSAT (out of 200) provides a comfortable buffer of 24 marks above the qualifying threshold of 66. This buffer is necessary because CSAT difficulty varies significantly year to year. Years like 2023 and 2025 saw many prepared GS candidates fail the CSAT qualifying mark due to unexpectedly high difficulty.
27. Is it possible to fail UPSC Prelims only because of CSAT?
Yes. Both conditions must be satisfied independently: GS Paper 1 score above the category cutoff AND CSAT minimum 33% (66 marks). A candidate who scores 120 in GS Paper 1 but only 60 in CSAT does not qualify, regardless of the GS performance.
28. Can I use a calculator in CSAT?
No. Calculators are prohibited inside the examination hall. All numerical problems in CSAT must be solved mentally or on rough paper in the question booklet. CSAT arithmetic is designed to be solvable without a calculator, typically involving Class 10-level operations.
For targeted CSAT practice, access:
29. When is the UPSC CSE Prelims cutoff released?
The official cutoff is released only after the completion of the entire examination cycle, which includes Prelims, Mains, and Personality Test. For a Prelims conducted in May or June, the official cutoff typically appears in April or May of the following year.
30. What was the UPSC CSE Prelims cutoff for the General category in recent years?
| Year General Category Cutoff (GS Paper 1, out of 200) | |
| 2024 | 87.98 |
| 2023 | 75.41 |
| 2022 | 88.22 |
| 2021 | 87.54 |
| 2020 | 92.51 |
| 2019 | 98.00 |
For the complete year-wise category-wise data, visit the UPSC CSE Prelims Cutoff page.
31. Are individual marks disclosed after the Prelims result?
No. UPSC does not release individual scores at the Prelims stage. Only a PDF listing qualified candidates' roll numbers is published. Individual marks are released later, as part of the mark sheet publication after the final result.
32. When is the UPSC CSE Prelims result typically declared?
The result is typically declared within 15 to 25 days of the examination date. For 2024, the exam was conducted on 16 June 2024 and the result was declared on 1 July 2024, a gap of 15 days.
33. How do I check the Prelims result?
Visit upsc.gov.in, go to the "What's New" section, and download the result PDF. Search your roll number using Ctrl+F (Windows) or Command+F (Mac). If your roll number appears, you have qualified. For the complete step-by-step guide, visit the UPSC CSE Prelims Result page.
34. How many candidates qualify from Prelims for Mains?
UPSC shortlists approximately 12 to 13 times the announced vacancies for the Mains stage. With 933 vacancies announced for 2026, approximately 11,000 to 12,000 candidates are expected to qualify from the Prelims.
35. What are the most important subjects in GS Paper 1?
Based on historical question distribution analysis, Environment and Ecology and Indian Polity and Governance together contribute 25 to 30 questions per year - the highest combined share. Economy, History, and Current Affairs each contribute 10 to 16 questions. No subject can be safely neglected. For the complete subject-wise breakdown, visit the UPSC CSE Prelims Exam Analysis page.
36. How many previous year papers should I solve?
Solving at least 10 years of previous year questions, subject-wise, is the minimum for serious preparation. The last 15 years of GS Paper 1 and CSAT PYQs are available on Aspirant Mitraa at:
Each PYQ on the platform comes with the correct answer, a detailed explanation, reasoning for why other options are incorrect, and key concept notes.
37. How many mock tests should I attempt before the examination?
A minimum of 15 to 20 full-length mock tests simulating both GS Paper 1 and CSAT in a single-day session is recommended. Additional subject-wise and topic-wise tests further strengthen individual areas. The UPSC CSE Prelims Test Series on Aspirant Mitraa offers 400 tests structured progressively from topic-wise to subject-wise to full-length mocks.
38. Is coaching mandatory to clear UPSC CSE Prelims?
No. Thousands of candidates clear the Prelims annually through self-study using standard reference books, a structured schedule, PYQ practice, and quality mock test series. Coaching provides structure and guidance but is not a prerequisite for qualification.
39. Which books are recommended for UPSC CSE Prelims?
| Subject Primary Reference | |
| Polity | M. Laxmikanth - Indian Polity |
| History (Modern) | Spectrum - A Brief History of Modern India (Rajiv Ahir) |
| History (Ancient and Medieval) | NCERT Class 6 to 12 |
| Geography | NCERT Class 6 to 12, G.C. Leong's Physical Geography |
| Economy | NCERT Class 11-12, Economic Survey (current year) |
| Environment | NCERT Class 11-12 Biology, Shankar IAS Environment |
| Science and Technology | NCERT Class 6 to 10, PIB updates |
| Current Affairs | The Hindu / Indian Express (daily), Yojana, PIB summaries |
40. How should Current Affairs preparation be structured for UPSC Prelims?
Current Affairs for UPSC Prelims is not about memorising daily news. The Commission tests current events that connect with static concepts. Recommended approach:
41. How many questions should I attempt in GS Paper 1?
Attempting 75 to 85 questions with high accuracy (above 70% correct among attempted) is statistically sounder than attempting 90 to 95 questions with lower accuracy. With 75 attempts at 75% accuracy: 56 correct (+112 marks) and 19 wrong (-12.54 marks) gives approximately 99.46 marks - comfortably above the General category cutoff range. Attempting 95 questions at 60% accuracy: 57 correct (+114 marks) and 38 wrong (-25.08 marks) gives approximately 88.92 marks - a significantly riskier outcome for a similar knowledge base.
42. Is the UPSC Prelims syllabus fixed or does it change?
The official syllabus as prescribed by UPSC does not change from year to year. However, the relative emphasis on specific topics within subjects changes annually based on current events and the Commission's internal assessment priorities. For the complete and current syllabus, visit the UPSC CSE Prelims Syllabus page.
43. How should I use the Aspirant Mitraa Syllabus Tracker?
The Syllabus Tracker allows candidates to mark topics as completed, in-progress, or pending. This provides a visual map of preparation coverage and prevents the common problem of unknowingly leaving entire topic areas untouched. Update the tracker after every study session to maintain an accurate picture of remaining preparation.
44. What concessions are available for PwBD candidates in UPSC CSE Prelims?
| Concession Detail | |
| Age relaxation | 10 years above the category maximum |
| Attempt limit | 9 for General/EWS/OBC; Unlimited for SC/ST |
| Application fee | Full exemption |
| Scribe facility | Available for eligible disabilities |
| Extra time | 20 minutes per hour (40 minutes for 2-hour papers) |
| Horizontal reservation | 4% of total vacancies across all categories |
45. How do I apply for a scribe in the UPSC CSE Prelims?
Candidates requiring a scribe must indicate this in the application form during registration. The details of the scribe including name, qualification, and relationship to the candidate must be submitted as specified in the official notification. Detailed scribe policy conditions are published in the UPSC notification and must be verified from the current year's official PDF. For the notification details, see the UPSC CSE Notification page.
46. Which disabilities qualify for the PwBD scribe facility in UPSC CSE?
As per the Rights of Persons with Disabilities Act, 2016, PwBD covers blindness and low vision, deaf and hard of hearing, locomotor disability including cerebral palsy, leprosy cured, dwarfism, acid attack victims and muscular dystrophy, autism, intellectual disability, specific learning disability and mental illness, and multiple disabilities from among the above categories including deaf-blindness.
47. What happens if I am found with a mobile phone inside the examination premises?
Being found with a mobile phone inside the UPSC examination premises even if it is switched off can lead to immediate cancellation of candidature and potential debarment from future UPSC examinations. The penalty is not limited to the current examination cycle.
48. What constitutes unfair means in UPSC CSE Prelims?
UPSC lists the following as unfair means: copying from another candidate, exchanging question booklets or OMR sheets, communicating with other candidates during the examination, impersonation, bringing unauthorised notes or material, using electronic communication devices, and tampering with OMR sheets. Any of these can result in permanent debarment from all UPSC examinations.
49. What happens if I write in both languages on the OMR sheet?
UPSC Prelims is an OMR-based paper with bubbles marked for each answer. There is no language writing on OMR sheets for Prelims (unlike Mains). The language selection applies to which version of the question paper the candidate reads (Hindi or English). Marking answers on OMR is uniform regardless of language choice.
50. What is the UPSC question paper representation facility?
After the Preliminary Examination, UPSC opens a 5-day window (typically from the 3rd to the 7th day after the examination) for candidates to submit representations regarding any disputed questions. Candidates can flag questions they believe are factually incorrect, have multiple correct answers, or are ambiguous. UPSC's expert committee reviews all representations and may cancel certain questions (awarding marks to all candidates) or retain them based on evaluation.
| Topic Key Fact | |
| Number of papers | 2 (GS Paper 1 and CSAT) |
| GS Paper 1 questions | 100 |
| CSAT questions | 80 |
| GS Paper 1 total marks | 200 (2 marks per question) |
| CSAT total marks | 200 (2.5 marks per question) |
| Negative marking (GS Paper 1) | -0.66 per wrong answer |
| Negative marking (CSAT) | -0.83 per wrong answer |
| CSAT qualifying mark | 66 out of 200 (33%) |
| CSAT nature | Qualifying only (not added to merit) |
| Prelims marks in final merit | Not counted |
| Maximum age (General) | 32 years as on 1 August of exam year |
| Maximum attempts (General) | 6 |
| Vacancies announced (2026) | 933 |
| Mains shortlist ratio | ~12-13 times total vacancies |
| Result declaration | ~15-25 days after Prelims |
| Application portal | upsconline.nic.in |
| Official website | upsc.gov.in |
Every question on this page reflects a real doubt raised by UPSC aspirants at various stages of their preparation. Treat the answers here as a reference but always verify critical eligibility and procedural details against the official UPSC notification for the specific year of your attempt.