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UPSC Civil Services Prelims 2025: Practice Set with Detailed Answers

Welcome, aspiring civil servants! In this comprehensive practice set, we have curated a set of sample questions tailored specifically for the UPSC Civil Services Preliminary Examination 2025. Each question is meticulously designed to align with the updated syllabus patterns and question formats prescribed by the UPSC.

Quantitative Aptitude

1. What is the sum of the first 50 odd numbers?

Answer: The sum of the first ‘n’ odd numbers is n^2, so the sum of the first 50 odd numbers is 50^2 = 2500.

Reasoning

2. If A + B means A is the brother of B, A – B means A is the sister of B, and A × B means A is the father of B, how is P related to Q in P + R × Q – S?

Answer: P is the father of Q.

General Awareness

3. Who is the current President of the United Nations General Assembly?

Answer: Volkan Bozkir

English

4. Identify the grammatically incorrect sentence: A) She and I are going to the market. B) Him and me are best friends. C) You and he must finish the project before deadline. D) We are planning a trip to Paris.

Answer: B) Him and me are best friends.

Subject-Specific GK

5. In which year was the Indian Space Research Organisation (ISRO) established?

Answer: ISRO was established on August 15, 1969.

Keep practicing diligently, stay focused, and believe in your abilities. Remember, consistent practice is the key to success in cracking the UPSC Civil Services Preliminary Examination. Are you ready to test your knowledge with the next set of questions?

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Written by Shan Prakash

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