The Union Public Service Commission (UPSC) conducts the Civil Services Preliminary Examination every year as the first stage of the IAS, IPS, IFS, and other group B selection process. The Prelims consist of two objective papers – General Studies Paper-I (GS I) and General Studies Paper-II (CSAT) – with a total of 180 marks and negative marking for wrong answers.
The 2024 Prelims was held on 16 June 2024 and drew significant attention for its question design, difficulty level, and the timing of the answer key release.
- Official Answer Key – When & What Was Released
After the examination, UPSC released the official answer key for both GS Paper-I and CSAT on its website on 21 May 2025, following the declaration of final results. The answer key includes SET-wise correct answers for all question papers (A, B, C, and D).
✔ GS Paper-I – 100 questions (200 marks)
✔ CSAT – 80 questions (200 marks, only qualifying in nature)
✔ Some questions were dropped by UPSC due to ambiguity, and these were not counted in scoring.
This official key enables candidates to accurately tally their responses, assess their performance, and estimate their likely GS Paper-I score.
- Paper Difficulty & Candidate Experience
Multiple coaching institutes and aspirant feedback pointed to a mixed response toward the 2024 prelims:
📌 Difficulty Level
- Several questions tested application-based knowledge, analytical thinking, and integration of static and current affairs concepts.
- Aspirants noted that while some questions were straightforward, a good number required deeper understanding and conceptual clarity.
📌 Reaction & Trend
- Student reactions online varied, with many describing parts of the paper as surprisingly tricky or unconventional in approach.
- Some aspirants noted that initial expectations of a “relatively easy” paper changed as answer keys were compared and ambiguities emerged.
📌 Highlights included
- Multiple Assertion-Reason and three-column matching questions.
- Geography emerged as a high-weight, application-oriented section.
CSAT was considered manageable for candidates who met basic aptitude thresholds.
Overall, the Prelims 2024 maintained the UPSC tradition of balancing conceptual questions with current affairs application — making it both challenging and rewarding for well-prepared candidates.
- Subject-Wise Areas & Core Focus
While UPSC does not officially publish a subject-wise weightage, data suggests the following broad trends for GS Paper-I based on official answer keys and coaching analysis:
| Subject Area | Approximate Question Distribution |
| Polity & Governance | Moderate to High |
| Economy & Budget | Moderate |
| Environment & Ecology | Moderate |
| Geography (Physical & Human) | Significant |
| History (Modern & Ancient) | Moderate |
| Science & Tech | Moderate |
| Miscellaneous (Agriculture, IR, Social Issues, Schemes, etc.) | Few |
This mix continued the trend of evaluating both static syllabus understanding and dynamic current affairs linkage, encouraging aspirants to cultivate holistic preparation rather than rote factual recall.
- Subject-Wise Distribution in GS Paper-I (2024)
Here is a subject-wise breakdown of the 100 questions asked in GS Paper-I of UPSC Prelims 2024 – compiled from expert analyses:
| Subject Area | Approx. No. of Questions |
| Geography | 18 |
| Environment & Ecology | 15 |
| Polity & Governance | 15 |
| Economy | 14 |
| Science & Technology | 13 |
| History (Modern + Ancient + Culture) | 12 |
| Miscellaneous (Agriculture, IR, Social Issues, Schemes, etc.) | 13 |
| Total | 100 |
(Sources vary slightly on counts, but this distribution is widely accepted as the closest estimate based on detailed analysis.)
- Breakdown by major subjects:
- Geography accounted for the most questions – both physical and Indian geography.
- Environment & Ecology remained high-weight, reflecting UPSC’s emphasis on climate, biodiversity, and sustainable development.
- Polity & Governance continued its consistent presence with a significant share of questions, many based on constitutional provisions, governance, and recent amendments.
- Economy and Science & Technology balanced static concepts with current developments.
- History had a moderate weight, with a blend of cultural, modern, and ancient topics.
- Miscellaneous topics, including International Relations, government schemes, social issues, and IR-related MCQs, collectively formed a sizeable chunk.
- What This Means for Aspirants
- Geography & Environment offered the highest question counts – suggesting these areas were key differentiators in 2024.
- Polity and Economy remained core scoring sections for strategic preparation.
- History questions, though fewer, required deeper conceptual linkage with cultural and heritage contexts.
- Miscellaneous sections (like IR and schemes) are often where aspirants can pick up surprise marks, so keeping up with current affairs regularly is vital.
- Answer Key Use & Score Estimation
After accessing the official answer key, candidates typically:
- Match their responses set-wise with the official key.
- Apply the UPSC marking scheme:
- +2 marks for each correct answer in GS Paper-I
- −⅓ mark for each wrong answer
- Calculate a raw score estimate, which helps in predicting readiness for Mains and gauging cut-off feasibility.
Since CSAT is only qualifying, it doesn’t directly affect ranking, but failing to secure the required 33% can disqualify a candidate.
The UPSC Prelims 2024 was balanced yet thoughtfully structured – rewarding both static knowledge and updated awareness of current affairs. The subject-wise distribution shows a clear trend: Geography, Environment, and Polity were subjects where aspirants could score high with solid preparation. With the official answer key available, candidates can now benchmark their preparation more accurately and plan next steps toward the Mains stage.
Frequently Asked Question (FAQ’s):
- From which subjects did the maximum number of questions come in GS Paper-I (2024)?
Ans: In Prelims 2024, the highest number of questions came from:
- Geography – 18 questions
- Environment & Ecology – 15 questions
- Polity & Governance – 15 questions
- Economy – 14 questions
- Science & Technology – 13 questions
- History – 12 questions
- Miscellaneous (IR, schemes, social issues, etc.) – 13 questions
Geography emerged as the most dominant subject in GS Paper-I.
- What was the overall difficulty level of Prelims 2024?
The overall difficulty level of GS Paper-I was considered Easy to Moderate, but analytical in nature. Many questions required conceptual clarity and elimination skills rather than direct factual recall. CSAT was generally manageable for candidates with regular aptitude practice.
- What preparation lessons can aspirants learn from Prelims 2024?
Key takeaways include:
- Focus strongly on Geography, Environment, and Polity, as they carried high weightage.
- Practice previous year questions (PYQs) thoroughly.
- Strengthen elimination techniques for tricky MCQs.
- Integrate current affairs with static subjects.
- Maintain consistent CSAT preparation to avoid last-minute risk.
