TLDR
- Keyword search misses past-year questions (PYQs) that test the same concept in different words — semantic search finds them by meaning.
- PYQ Lens lets you search every previous-year question by topic, concept, or a single news line, and ranks results by how closely they match — not by exact words.
- Mentor is an AI study companion whose every answer is grounded in your own study notes, PYQs, and current affairs — with citations, follow-ups, and attemptable PYQ links.
- Use PYQ Lens to find what has been asked; use Mentor to understand it. Both are free to start across UPSC and every State PCS exam.
What "Searching PYQs by Meaning" Actually Means
Searching past-year questions (PYQs) by meaning — semantic search — finds every previous-year question that tests a concept, not just the ones containing the exact words you typed. It matches ideas, not letters: search "inflation" and it still surfaces the question about "rising price levels" or "monetary policy targeting," because all three test the same concept. A keyword search would miss those, so it quietly under-counts how often a topic has been asked.
For a UPSC or State PCS aspirant doing self-study, this is the difference between revising one phrasing of a topic and revising every way an examiner has ever framed it. That is exactly what PYQ Lens is built to do, and once you have found the questions, Mentor helps you actually understand and clear the doubts they raise.
Key Terms You Should Know
- PYQ (Previous-Year Question): a question that has appeared in a past prelims or mains paper — the single best signal of what an exam actually values.
- Semantic search: search that matches by meaning, not exact words, so related concepts surface even when the wording differs.
- Embeddings: the numerical representation of a question's meaning that makes semantic search possible — questions with similar meaning sit close together.
- % match: the similarity score PYQ Lens shows on each result, so you can see how strongly a past question relates to your query.
- Grounded answer: an AI answer anchored to specific source material (your notes, PYQs, current affairs) rather than generated from memory alone — far less likely to invent facts.
- RAG (Retrieval-Augmented Generation): the technique behind Mentor — it retrieves the most relevant owned content first, then writes an answer based on it.
Why Keyword Search Fails for PYQ Revision
Paper-setters rarely repeat the same words. The same concept — say, fundamental rights, the monsoon, or inflation targeting — gets reframed every year with fresh vocabulary, current-affairs hooks, and statement-based formats. A keyword search rewards you only when your word happens to appear in the question, so you end up believing a topic is "lightly asked" when it has actually appeared a dozen times under different phrasing. That blind spot quietly skews how you allocate study time. Searching by meaning removes it: you describe the concept once, and every related past-year question shows up ranked by relevance.
Meet PYQ Lens: Find Past Questions by Concept, Not Keywords
What PYQ Lens does
PYQ Lens is semantic search built specifically over our tagged corpus of previous-year questions. You type a concept, a topic, or even a single news headline, and it returns the most relevant PYQs for your exam — ranked by a clear % match score — with the topic, year, and paper shown on each result. It works for UPSC and every State PCS exam on the platform, in the same way.
How PYQ Lens ranks results
- Search by meaning: type "Fundamental Rights," "inflation targeting," or "monsoon and climate" and get conceptually-matched questions, not just keyword hits.
- Ranked by relevance: every result carries a % match so you can scan the strongest matches first.
- Full context: each result shows the topic, year, and paper, with a direct link to attempt the full question.
- Search from a news line: paste a current-affairs headline to see how that theme has been tested in past papers.
Already know your exam? Jump straight into attempting that exam's previous-year questions online — the same corpus PYQ Lens searches by meaning.
Attempt UPSC PYQs onlinePYQ Lens works across UPSC and every State PCS exam — pick your exam and start searching past questions by meaning.
Browse PYQs for your examMeet Mentor: A Study Companion Grounded in Your Notes, PYQs & Current Affairs
What "grounded" means for Mentor
Finding the right past-year question is half the job; understanding it is the other half. Mentor is an AI study companion that answers your doubts — but unlike a generic chatbot, every answer is grounded in owned content: your study notes, the PYQ corpus, and current affairs. It retrieves the most relevant material first, then writes a grounded explanation with citations, suggested follow-up questions, and attemptable PYQ links right alongside the answer. It replies in English and Hindi, and it remembers the thread of your conversation so you can drill deeper.
What every Mentor answer includes
- Grounded answers: responses are anchored to your notes, PYQs, and current affairs — not generated from thin air.
- Citations and sidecars: every reply can show its sources, suggest follow-up questions, and surface up to a few attemptable PYQs.
- Bilingual: ask in English or Hindi and get answers in the language you study in.
- Conversational: Mentor keeps recent context so you can ask "why?" and "give me an example" without re-explaining.
- Fresh current affairs: timely answers are never cached, so you do not get stale news.
PYQ Lens vs Mentor: Which to Use When
| Your situation | Use this |
|---|---|
| You want to see every past question on a topic | PYQ Lens |
| You read a news headline and want to know how it was tested | PYQ Lens |
| You are stuck on a concept and need it explained | Mentor |
| You got a PYQ wrong and want to understand why | Mentor |
| You want to gauge how heavily a topic is asked | PYQ Lens |
| You want an exam-ready explanation with sources | Mentor |
| You want to revise a theme across years | PYQ Lens, then Mentor |
A real revision loop, start to finish
Meet Ananya, a working professional preparing for a State PCS prelims while keeping UPSC open as a backup. One morning she reads a headline about the RBI holding the repo rate to keep "inflation targeting" on track. Instead of just noting it, she opens PYQ Lens and searches "inflation targeting." Lens returns past-year questions ranked by % match — including several she would never have found by keyword, because the papers framed the same idea as "rising price levels," "monetary policy framework," and "CPI-based target." She attempts the top four matches cold, before reading anything, and gets three right. The fourth — a statement-based question on who fixes the inflation target — she gets wrong. She asks Mentor: "Explain how India's inflation-targeting framework is set and who decides the target — and how is this usually asked in prelims?" Mentor answers from her notes, the PYQ corpus, and current affairs, cites the relevant framework, and suggests one more PYQ to attempt. She opens the citation, confirms the exact body and the agreement behind it, rewrites the fact in her own words, and attempts the follow-up PYQ to lock it in. Total time: under ten minutes — and she has now revised every way that concept has been examined, not just the one phrasing she happened to read that morning.
How to Phrase a PYQ Lens Search for the Best Match
- Search by concept, not a single word: "federalism and Centre-State relations" beats "federalism."
- Use a news line when relevant: paste the headline you read this morning to see its PYQ footprint.
- Start broad, then narrow: if a query returns too much, add the specific angle you care about.
- Try alternate framings: if results feel thin, rephrase the concept — semantic search rewards how you describe the idea.
- Scan the % match: focus your revision on the highest-matching questions first.
How to Ask Mentor a Doubt So the Answer Is Exam-Ready
- State the concept and your confusion: "Explain the difference between Fundamental Rights and Directive Principles — I keep mixing up which are enforceable."
- Ask for exam framing: add "how is this usually asked in prelims?" to get the angle examiners use.
- Request examples and data: ask for the specific article, act, or statistic an examiner expects.
- Follow up: use Mentor's suggested follow-ups, or ask "give me a PYQ on this" to jump straight into practice.
- Verify with the source: open the citations Mentor provides before you commit a fact to your notes.
Try semantic PYQ search and grounded AI doubt solving on your exam — free to start.
Start free with PYQ Lens and MentorWhen AI Doubt Help Helps — and When to Double-Check
Grounding makes Mentor far more reliable than a generic chatbot, because its answers are tied to your notes, PYQs, and current affairs rather than invented. That is exactly why it is well-suited to concept clarification, PYQ explanations, and "how is this asked" framing. But no AI replaces verification for facts that must be exact — dates, figures, article numbers, and the latest scheme details. Use Mentor to understand and to point you at the right sources, then confirm anything you will memorise against the citation or your standard reference.
Candidates are advised to go through the contents of the official Notification carefully before applying; the eligibility conditions, scheme and syllabus of the examination are as published by the Commission. The onus of verifying these details lies with the candidate.
A Daily Self-Study Loop Using Lens + Mentor
- 1. Pick today's topic from your plan or from a current-affairs headline.
- 2. Run it through PYQ Lens to see every past-year question that has tested it.
- 3. Attempt the highest-matching PYQs cold, before reading anything.
- 4. For every question you got wrong or felt unsure on, ask Mentor to explain it.
- 5. Read Mentor's citations, then add the verified fact to your notes in your own words.
- 6. Use a follow-up like "give me one more PYQ on this" to close the loop and confirm you have it.
Common Mistakes When Using AI for PSC Doubt Solving
- Treating keyword hits as the full picture: without semantic search you under-count how often a topic is asked.
- Asking vague questions: "explain polity" gets a vague answer; name the exact concept and your confusion.
- Skipping the citations: the value of a grounded answer is its source — read it.
- Memorising AI output verbatim instead of rewriting it in your own words.
- Using AI to avoid attempting PYQs: explanation only sticks after you have tried the question yourself.
- Not verifying exact dates, figures, and article numbers before adding them to notes.
Free vs Pro: What You Get
| Feature | Free | Pro / Premium |
|---|---|---|
| PYQ Lens searches | 20 / day | Unlimited |
| PYQ years visible in Lens | 3 most recent | All years |
| Mentor chats | 10 / month | Unlimited |
| Citations, follow-ups, attemptable PYQs | Yes | Yes |
| English & Hindi | Yes | Yes |
Both features are free to start on every exam, so you can search past questions by meaning and clear doubts with a grounded mentor before deciding to upgrade. Pro and Premium remove the daily caps and unlock all PYQ years.
Once you can find PYQs by meaning, the next edge is spotting which topics keep coming back. See how to read past-year trends and predict what is likely to be asked next.
Read: Read PYQ trends and predict what's nextCompare plans to unlock unlimited semantic PYQ search and grounded AI doubt solving.
Compare PSCPrep plans