UPSC CSE Prelims 2024 Answer Key Download PDF: GS and CSAT
Official UPSC Prelims 2024 Answer Key for GS & CSAT papers. Download PDF, learn about 3 dropped questions, and calculate your final score.
UPSC Prelims
Current affairs
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Gajendra Singh Godara
Dec 11, 2025
5
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The Union Public Service Commission (UPSC) has officially released the UPSC Prelims 2024 Answer Key for both General Studies (Paper 1) and the Civil Services Aptitude Test (Paper 2).
For the thousands of aspirants who appeared on June 16, 2024, the official answer key represents the final decision on all contentious questions.
While the result of the preliminary stage was declared earlier on July 1, 2024, the release of the answer key is significant as it reveals the "official stance" on controversial questions that plagued coaching institutes and study circles for months.
Below is a detailed breakdown of the key, the mathematical impact of dropped questions, and why this document is a goldmine for aspirants targeting CSE 2025 and 2026.
The most critical revelation from the UPSC Prelims 2024 Answer Key GS is that the Commission has dropped three questions from the General Studies Paper 1.
In the lexicon of UPSC, a "dropped question" is one that is nullified due to ambiguity, factual errors, or multiple correct interpretations. These questions are removed from the evaluation process entirely, which fundamentally alters the scoring mathematics for every candidate.
GS Paper 1:
Aspirants often calculate their final result based on the standard metric (2 marks per question). However, with the removal of 3 questions, the denominator changes from 100 to 97.
Total Marks: Remains constant at 200.
Total Valid Questions: Reduced to 97.
Final Total Marks : 97X2 = 194
Final Marks of Aspirants : (Correct answers X 2) - (Wrong answer X 0.67).
Impact on Negative Marking: The penalty for a wrong answer remains one-third of the marks assigned to that question.
GS Paper 2 (CSAT):
Total Marks: Remains constant at 200.
Total Questions: 80.
Final Marks of Aspirants : (Correct answers X 2.5) - (Wrong answer X 0.83).
Why This Matters:
For an aspirant on the borderline, this shift is massive. A candidate who might have calculated their score as 88 (based on the flat 2-mark rule) could see their score jump to 90+ or drop, depending on whether the dropped questions were ones they attempted correctly or incorrectly. This reduction in total questions changes the baseline score ceiling, which explains score variations between initial estimates and final calculations.
The UPSC CSAT Answer Key 2024 is equally important, even though Paper 2 is qualifying in nature. In recent years, the CSAT paper has become the "graveyard of dreams" for many GS-toppers, largely due to the increasing vagueness of Reading Comprehension (RC) passages and the rising difficulty of Quantitative Aptitude.
The official key serves as the ultimate guide to understanding UPSC's logic in Reading Comprehension. Often, coaching institutes provide answers based on "common sense" or "academic logic," but UPSC answers rely strictly on the inference derived from the passage. By analyzing the official UPSC CSE 2024 Prelims Answer key, future aspirants can calibrate their thinking to match the Commission's wavelength—a crucial step for clearing the 66.67 marks threshold.
Every year, there is a divergence of 5-10 marks between the answer keys released by premier coaching institutes and the official UPSC key. The release of the upsc answer key 2024 confirms that this year was no exception.
Ambiguous Topics: Questions from Ancient History and Environment often have sources that contradict each other. The official key settles these debates.
Source of Truth: For 2025 aspirants, the official key validates which NCERTs or standard reference books the Commission is treating as the "gospel." If a question on the Constitution was interpreted differently by experts but UPSC backed the raw text of the Article, it signals a return to basics.
If you are preparing for the upcoming cycle, do not treat this answer key merely as a historical document. Use it as a preparation tool:
Reverse Engineering: Take the GS Paper 1 of 2024 and attempt it as a mock test. Score yourself strictly using this official key.
Identify "Trap" Questions: Look at the three dropped questions. Analyze why they were dropped. Was the phrasing vague? Were the options overlapping? Learning to identify and skip such "risky" questions in the exam hall is a skill that saves negative marks.
Audit Your Sources: If you got a Polity question wrong because your study material had a nuanced interpretation while UPSC accepted a direct one, it’s time to switch back to the bare act or primary sources.
Candidates can access the keys directly from the official website. The keys are released in PDF format for all four sets (A, B, C, and D).
Steps to Download:
Visit the official website: upsc.gov.in.
Navigate to the "Examination" tab and select "Answer Keys".
Look for "Civil Services (Preliminary) Examination, 2024".
Download the separate UPSC Prelims 2024 Answer key PDFs for General Studies Paper 1 andGeneral Studies Paper 2 (CSAT).
Frequently asked question (FAQs)
The deletion of three questions in GS Paper 1 is a reminder that the UPSC Prelims is not just a test of knowledge, but also a test of managing uncertainty. As you gear up for the next battle, let this official document be your compass, guiding you away from speculation and towards the Commission's rigorous standards.
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