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Download the unofficial UPSC Prelims Answer Key 2025 for GS Paper 1 and CSAT (Paper 2). Calculate your expected score for the prelims held on May 25, 2025—Shift 1: 9:30 AM–11:30 AM, Shift 2: 2:30 PM–4:30 PM.
vishal pathaniya
May 26, 2025
UPSC Prelims Answer Key 2025 helps aspirants to evaluate their answers. UPSC releases the official answer keys for both the prelims papers, General Studies Paper I and CSAT-General Studies Paper II. Both these papers will be in the form of MCQs. The answer keys can be downloaded from UPSC’s official website, upsc.gov.in/examinations/answer-key. Candidates can access the set-wise answer keys for both the General Studies and the CSAT Paper.
The Union Public Service Commission (UPSC) conducted the Civil Services (Preliminary) Examination on May 25, 2025. The UPSC CSE Preliminary Examination was held in two shifts, the first shift was from 9:30 AM to 11:30 AM, and the second shift was from 2:30 PM to 4:30 PM. The official UPSC Prelims Answer Key 2025 will be released by UPSC after the completion of the entire examination cycle of 2025, including the Mains and Interview stages. However, our PWOnlyIAS Academic Team provided the unofficial UPSC Prelims Answer Key 2025 PDFs for both GS Paper 1 and GS Paper 2 (CSAT).Below are the links to download the UPSC Prelims Answer Key 2025 PDFs (Unofficial).
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UPSC Prelims Answer Key 2025 Link |
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| UPSC Prelims Answer Key 2025 GS Paper 1 PDF | Download Link |
| UPSC Prelims Answer Key 2025 GS Paper 2 (CSAT) PDF | Download Link |
The Union Public Service Commission (UPSC) officially releases the Prelims answer keys on its website only after the completion of the entire examination cycle, including the declaration of final results. These answer keys are made available for both the General Studies (GS) and CSAT papers. Candidates can download the official answer keys by following the steps given below:
Step 1: Visit UPSC’s official website at upsc.gov.in
Step 2: On the top left corner of the page, click on the examination portal
Step 3: Click on the ‘Answer Key’ option
Step 4: Click on the ‘Civil Services (Preliminary) Examination’ link
Step 5: Click on the link for ‘GS Paper 1’ and ‘GS Paper 2’
Step 6: Locate your question paper set and match your answer keys
The UPSC Prelims Answer Key is officially released by UPSC after the entire examination cycle, including the final results, is complete. While it may not benefit candidates who have already taken the exam, it is extremely useful for those preparing for the upcoming attempt. By comparing the official answer key, aspirants can understand how answers to tricky or disputed questions are decided. This helps improve accuracy and build a better question-solving approach for future exams. Below, you can find year-wise answer keys for General Studies (GS) and CSAT papers to aid your preparation.
UPSC Prelims Answer Key Year-wise
Year of Examination
General Studies Paper
CSAT Paper
2025
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2024
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2023
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2022
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2021
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2020
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2019
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2018
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2017
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The UPSC Prelims Exam 2024 was conducted on 16th June 2024. The results of the Prelims Exam were declared on 1st July 2024. The UPSC Prelims Answer Key 2024 was updated by the Union Public Service Commission (UPSC) on 21st May 2025. The answer keys for both papers can be downloaded from the table below:
| UPSC Prelims Answer Key 2024 All Sets | |
| General Studies (Paper 1) | Download from Here |
| CSAT (Paper II) | Download from Here |
UPSC prelims exam 2023 was conducted on May 28, 2023. On June 12, 2023, the results of the prelims exam were declared. The answer key for both papers can be downloaded from the table below:
UPSC Prelims Answer Key 2023 All Sets
General Studies (Paper 1)
Download from Here
CSAT (Paper II)
Download from Here
UPSC conducted the prelims examination on June 5, 2022. The answer key was released in May 2023, after the declaration of the final result. The final answer key can be downloaded from links below:
UPSC Prelims Answer Key 2022 All Sets
General Studies (Paper 1)
Download from Here
CSAT (Paper II)
Download from Here
UPSC prelims exam 2021 was conducted on October 10th, 2021. The final answer key for all the sets can be downloaded from the links below:
UPSC Prelims Answer Key 2021 All Sets
General Studies (Paper 1)
Download from Here
CSAT (Paper II)
Download from Here
UPSC prelims 2020 was held on October 4th, 2020. The final answer key for all the question paper sets can be downloaded from links given below:
UPSC Prelims Answer Key 2020 All Sets
General Studies (Paper 1)
Download from Here
CSAT (Paper II)
Download from Here
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UPSC conducted prelims 2019 on June 2nd 2019. The links to download answer keys of both the papers can be found below:
UPSC Prelims Answer Key 2019 All Sets
General Studies (Paper 1)
Download from Here
CSAT (Paper II)
Download from Here
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