UPSC Civil Services Prelims
Master Every Question,
Understand Every Answer
9,400+ questions across 7 subjects and 115+ chapters — with option-by-option explanations and 2,300+ PYQs from 25 years of UPSC papers.
9,400+
Practice Questions
7
Subjects
115+
Chapters
2,300+
PYQs Tagged
Try It Right Here
Answer One Real PYQ
This is the whole product in one question: whichever option you pick, you learn why every option is right or wrong.
In India, separation of judiciary from the executive is enjoined by:
Pick an option — every choice gets its own explanation.
Coverage Depth
Every Subject, Fully Covered
Not a sampler — a complete question bank built chapter by chapter across the entire Prelims syllabus.
Every question includes explanations for all four options — not just the correct one.
View all subjects →Why PrelimsAI
Built for Serious Aspirants
Chapter-wise Practice
Structured, sequential learning organized by subject and chapter. Build mastery one topic at a time.
Mock Tests
UPSC-weighted question distribution with negative marking. Experience the real exam pressure.
Option-by-option Explanations
Understand why each option is right or wrong. Learn the reasoning behind every answer choice.
Past Year Questions
2,300+ tagged PYQs from 25 years of UPSC papers, organized by chapter. Practice the questions that matter most.
The Difference
An Answer Key Is Not an Explanation
Most prelims prep gives you the correct letter. Understanding why the other three are wrong is where marks actually come from.
| What you get | PDF question banks | Video coaching portals | PrelimsAI |
|---|---|---|---|
| All four options explained, per question | — | — | ✓ |
| PYQs tagged to subject, chapter and year | — | ✓ | ✓ |
| Accuracy and pace tracked chapter by chapter | — | — | ✓ |
| Weak areas turned into revision queues | — | — | ✓ |
| Daily current-affairs digest with a quiz | — | ✓ | ✓ |
| Free to start | ✓ | — | ✓ |
How It Works
Three Simple Steps
Pick a Subject & Chapter
Browse subjects, choose a chapter, and configure your practice session exactly how you want it.
Answer One at a Time
Focus on each question individually. Confirm your answer, skip, or flag for review.
Learn from Explanations
Review detailed explanations for every option. Understand the reasoning, not just the answer.
Free Study Resources
Start With Free Resources
Explore the syllabus, solved PYQs, daily current affairs, subject practice, and mock-test page before you build a study plan. Practice is free to start.
FAQ
Frequently Asked Questions
- What is PrelimsAI?
- PrelimsAI is a UPSC Prelims preparation platform with 9,400+ MCQs across 7 subjects and 115+ chapters. Every question is solved with option-by-option explanations, so you understand why each wrong choice is wrong — not just the correct answer.
- Is PrelimsAI free to use?
- Yes. You can create a free account and start practising chapter-wise MCQs with full option-by-option explanations right away.
- Which subjects does PrelimsAI cover?
- All UPSC Prelims General Studies Paper I subjects: History & Culture, Indian Polity & Governance, Geography, Indian Economy, Environment & Ecology, General Science, and Current Affairs — organised chapter-wise. Browse all subjects →
- Are previous year questions (PYQs) included?
- Yes. 2,300+ previous year questions from 25 years of UPSC Prelims papers are tagged by subject, chapter, and year — each solved with a detailed explanation. Explore the PYQ archive →
- Does PrelimsAI cover daily current affairs?
- Yes. An editor-reviewed daily digest distils prelims-relevant news into quick facts with a short quiz, published every day and free to read without an account. Read the daily digest →
- How is PrelimsAI different from PDF question banks?
- PDF compilations give you an answer key. PrelimsAI explains every option, tracks your accuracy and pace chapter by chapter, and turns your weak areas into targeted practice sessions — so revision is driven by data, not guesswork.
Start Practicing Today
9,400+ questions. Every option explained. Every subject covered. Free.