Reviewing the UPSC Prelims Answer Key 2025 with detailed solutions is essential for gaining valuable insights into the evolving patterns of the UPSC Civil Services Examination (CSE). It helps aspirants understand the latest trends and the changing nature of questions posed by the Commission. This article is designed to provide candidates with comprehensive and reliable access to the authentic UPSC Prelims Answer Key 2025 along with accurate solutions.
Analyzing previous years’ questions (PYQs) along with their answers and solutions is crucial for keeping UPSC preparation aligned with the latest trends and exam patterns—especially given the dynamic nature of the UPSC Prelims Exam. The sections below offer guidance on how to access the UPSC Prelims 2025 Answer Key with detailed solutions.
UPSC Official Answer Key
The official UPSC Prelims Answer Key will be available on the official website of the UPSC only after the final result of the UPSC CSE 2025 is announced next year. This may happen somewhere around April-May, 2026.
UPSC Prelims 2025 Answer Key & Solution
The NEXT IAS expert team has prepared one of the most authentic UPSC Prelims Answer Key for GS as well as CSAT Papers. The same can be accessed as explained in the sections that follow.
UPSC Prelims Answer Key 2025: General Studies-I (GS-I)
UPSC Prelims 2025 Answer Key of all sets of General Studies-I (GS-I) Paper can be accessed at the following link.
| UPSC Prelims 2025 GS-I Set | Answer Key PDF |
|---|---|
| GS-I, Set A | UPSC Prelims 2025 GS-I Answer Key |
| GS-I, Set B | |
| GS-I, Set C | |
| GS-I, Set D |
UPSC Prelims Answer Key 2025 with Solution: CSAT
UPSC Prelims 2025 Answer Key and solution of all sets of CSAT Paper can be accessed at the following link.
| UPSC Prelims 2025 CSAT Set | Answer Key PDF |
|---|---|
| CSAT, Set A | UPSC Prelims 2025 CSAT Answer Key |
| CSAT, Set B | |
| CSAT, Set C | |
| CSAT, Set D |
How to Calculate Score Using UPSC Prelims 2025 Answer Key?
Use the UPSC Prelims Answer Key 2025 to find out the number of right and wrong answers marked by you in the exam. Once you are done with this, you can calculate your score in each paper of UPSC Prelims 2025 as follows.
Calculating Score in GS Paper
Use the following marking scheme to calculate your score in the UPSC Prelims 2025 GS Paper.
| Marks for each Correct Answer | +2 |
| Marks for each Incorrect Answer | -0.66 |
| Marks for each Unattempted Question | 0 |
Calculating Score in CSAT Paper
Use the following marking scheme to calculate your score in the UPSC Prelims 2025 CSAT Paper.
| Marks for each Correct Answer | +2.5 |
| Marks for each Incorrect Answer | -0.83 |
| Marks for each Unattempted Question | 0 |
UPSC Prelims 2025: Detailed Analysis & Expected Cut Off
Candidates can also visit our detailed analysis of the UPSC Prelims Exam 2025 and the expected cut off for the same at the following links.
A detailed analysis of UPSC Prelims 2025 is advisable for every aspirant in order to gain crucial insights into current trends and patterns of the exam. UPSC Prelims 2025 Answer Key and Solution prepared by the experts of NEXT IAS can help one do the same. Aspirants are advised to download and go through the same.
Frequently Asked Questions (FAQs)
Does UPSC release the answer key for Prelims?
Yes, the official UPSC Prelims answer key 2025 will be released after the announcement of the final result of the UPSC CSE 2025.
How to download official UPSC answer key?
Once released by the UPSC in around April-May, 2026, the candidate can download the UPSC official answer key from the official website of the UPSC.
